Number 15

Number 15 spell 🔊, write in words: fifteen . Ordinal number 15th is said 🔊 and write: fifteenth. The meaning of number 15 in Maths: Is Prime? Factorization and dividers. The square root and cube root of 15. The meaning in computer science, numerology, codes and images, writing and naming in other languages, other interesting facts, news.

Useful information about number 15

The decimal (Arabic) number 15 converted to a Roman number is XV. Roman and decimal number conversions.
The number 15 converted to a Mayan number is mayan number 15
Decimal and Mayan number conversions.

Weight conversion


15 kilograms (kg) = 33.1 pounds (lb)
15 pounds (lb) = 6.8 kilograms (kg)

Length conversion


15 kilometers (km) equals to 9.321 miles (mi).
15 miles (mi) equals to 24.140 kilometers (km).
15 meters (m) equals to 24.140 feet (ft).
15 feet (ft) equals 4.572 meters (m).
15 centimeters (cm) equals to 5.9 inches (in).
15 inches (in) equals to 38.1 centimeters (cm).

Temperature conversion


15° Fahrenheit (°F) equals to -9.4° Celsius (°C)
15° Celsius (°C) equals to 59° Fahrenheit (°F)

Power conversion


15 Horsepower (hp) equals to 11.03 kilowatts (kW)
15 kilowatts (kW) equals to 20.40 horsepower (hp)

Codes and images of the number 15

Number 15 morse code: .---- .....
Sign language for number 15:
Sign language for number 15 Sign language for number 15
Images of the number
Image (1) of the numberImage (2) of the number
Number 15 black image Number 15 red image
There is no copyright for these images. Number 15 infographic.
More images, other sizes, codes and colors ...

Photo of number 15

Photo of the number 15

Gregorian, Hebrew, Islamic, Persian and Buddhist year (calendar)

Gregorian year 15 is Buddhist year 558.
Buddhist year 15 is Gregorian year 528 a. C.
Gregorian year 15 is Islamic year -626 or -625.
Islamic year 15 is Gregorian year 636 or 637.
Gregorian year 15 is Persian year -608 or -607.
Persian year 15 is Gregorian 636 or 637.
Gregorian year 15 is Hebrew year 3775 or 3776.
Hebrew year 15 is Gregorian year 3745 a. C.
The Buddhist calendar is used in Sri Lanka, Cambodia, Laos, Thailand, and Burma. The Persian calendar is official in Iran and Afghanistan.

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Mathematics of no. 15

Multiplications

Multiplication table of 15


15 multiplied by two equals 30 (15 x 2 = 30).
15 multiplied by three equals 45 (15 x 3 = 45).
15 multiplied by four equals 60 (15 x 4 = 60).
15 multiplied by five equals 75 (15 x 5 = 75).
15 multiplied by six equals 90 (15 x 6 = 90).
15 multiplied by seven equals 105 (15 x 7 = 105).
15 multiplied by eight equals 120 (15 x 8 = 120).
15 multiplied by nine equals 135 (15 x 9 = 135).
show multiplications by 6, 7, 8, 9 ...

Fractions: decimal fraction and common fraction

Fraction table of 15


Half of 15 is 7,5 (15 / 2 = 7,5 = 7 1/2).
One third of 15 is 5 (15 / 3 = 5).
One quarter of 15 is 3,75 (15 / 4 = 3,75 = 3 3/4).
One fifth of 15 is 3 (15 / 5 = 3).
One sixth of 15 is 2,5 (15 / 6 = 2,5 = 2 1/2).
One seventh of 15 is 2,1429 (15 / 7 = 2,1429 = 2 1/7).
One eighth of 15 is 1,875 (15 / 8 = 1,875 = 1 7/8).
One ninth of 15 is 1,6667 (15 / 9 = 1,6667 = 1 2/3).
show fractions by 6, 7, 8, 9 ...

Calculator

15

Advanced math operations

Is Prime?


The number 15 is not a prime number. The closest prime numbers are 13, 17.
15th prime number in order is 47.

Factorization and dividers


Factorization 3 * 5 = 15
Divisors of number 15 are 1 , 3 , 5 , 15
Total Divisors 4.
Sum of Divisors 24.

Powers


The second power of 152 is 225.
The third power of 153 is 3.375.

Roots


The square root √15 is 3,872983.
The cube root of 315 is 2,466212.

Logarithms


The natural logarithm of No. ln 15 = loge 15 = 2,70805.
The logarithm to base 10 of No. log10 15 = 1,176091.
The Napierian logarithm of No. log1/e 15 = -2,70805.

Trigonometric functions

The cosine of 15 is -0,759688.
The sine of 15 is 0,650288.
The tangent of 15 is -0,855993.

Properties of the number 15

Is a Friedman number: No
Is a Fibonacci number: No
Is a Bell number: Yes
Is a palindromic number: No
Is a pentagonal number: No
Is a perfect number: No

Number 15 in Computer Science

Code typeCode value
Unix timeUnix time 15 is equal to Thursday Jan. 1, 1970, 12:15 a.m. GMT
IPv4, IPv6Number 15 internet address in dotted format v4 0.0.0.15, v6 ::f
15 Decimal = 1111 Binary
15 Decimal = 120 Ternary
15 Decimal = 17 Octal
15 Decimal = F Hexadecimal (0xf hex)
15 BASE64MTU=
15 MD59bf31c7ff062936a96d3c8bd1f8f2ff3
15 SHA1f1abd670358e036c31296e66b3b66c382ac00812
15 SHA22487592c38e2b36a1d35437714ecedee4d6fad7a1a0b1bf5d7a2ab68ef
15 SHA256e629fa6598d732768f7c726b4b621285f9c3b85303900aa912017db7617d8bdb
15 SHA384234bc95f992148c77dff31709daab681994a9604617e25fe1233c010ac8a98f53a4df41da3f7f6d18fc8b51ade37c9fe
More SHA codes related to the number 15 ...

If you know something interesting about the 15 number that you did not find on this page, do not hesitate to write us here.

Numerology 15

Numerology number 15: what does it mean spiritually?

First, we need to understand the two digits that make up the number 15, which are 1 and 5. We know that the number 1 is often a symbol of a new cycle, a restart, while the number 5 represents a time of discovery, the discovery of yourself, to have more fun, to be more creative, to have a child, and love both others and the world more.

Taking these meanings together here, we come to believe that those in their 15th year but also in their personal month, can decide to completely redesign their life, to give more love, to finally use those qualities.

Read more ...

The meaning of the number 5 (five), numerology 5

Character frequency 5: 1

The number five (5) came to this world to achieve freedom. You need to apply discipline to find your inner freedom and open-mindedness. It is about a restless spirit in constant search of the truth that surrounds us. You need to accumulate as much information as possible to know what is happening in depth. Number 5 person is intelligent, selfish, curious and with great artistic ability. It is the symbol of freedom, independence, change, adaptation, movement, the search for new experiences, the traveling and adventurous spirit, but also of inconsistency and abuse of the senses.
More about the meaning of the number 5 (five), numerology 5 ...

The meaning of the number 1 (one), numerology 1

Character frequency 1: 1

Number one (1) came to develop or balance creativity, independence, originality, self-reliance and confidence in the world. It reflects power, creative strength, quick mind, drive and ambition. It is the sign of individualistic and aggressive nature.
More about the meaning of the number 1 (one), numerology 1 ...

Interesting facts about the number 15

Asteroids

  • (15) Eunomia is asteroid number 15. It was discovered by A. de Gasparis from Obs. Capodimonte Astronomical on 7/29/1851.

Aircrafts and flights

  • 02/29/1968 the Aeroflot plane, flight number 15, Ilyushin Il-18D crashed in Parchum, Chunsky District, Russia 74 passengers and 9 crew members died.
  • The North American X-15 was a rocket aircraft that was part of the X series of experimental aircraft used by the USAF, NASA, and the USN. The X-15 achieved several speed and altitude marks in the early 1960s, reaching the limit with outer space (the Kármán line) and obtaining information that would be used in the design of aircraft and spacecraft later.

Areas, mountains and surfaces

  • The total area of Luzon is 42,458 square miles (109,965 square km). Country Philippines (Bicol, Cagayan Valley, Calabarzon, Central Luzon, Cordillera, Ilocos, and the National Capital Region). 15th largest island in the world.

Astrology

Distances between cities

  • There is a 15 miles (23 km) direct distance between Brooklyn (USA) and The Bronx (USA).
  • There is a 15 miles (24 km) direct distance between Ciudad Nezahualcoyotl (Mexico) and Ecatepec (Mexico).
  • There is a 15 miles (23 km) direct distance between Ecatepec (Mexico) and Naucalpan de Juárez (Mexico).
  • There is a 15 miles (24 km) direct distance between Goyang-si (South Korea) and Incheon (South Korea).
  • There is a 15 miles (24 km) direct distance between Jakarta (Indonesia) and Tangerang (Indonesia).
  • There is a 15 miles (24 km) direct distance between Saitama (Japan) and Tokyo (Japan).

Games

  • Pokémon Beedrill (Supiā, Spear) is a pokémon number # 015 of the National Pokédex. Beedrill is a bug and poison type Pokémon in the first generation. It is a Pokémon from the Bug Egg group. The other Beedrill indexes are Kalos Centro index 028 - Central Zone Pokédex, Johto index 029 .

In other fields

  • Dreaming of the number 15 means an alert to get away from the lie.

Mathematics

  • 15 is the smallest composite number n with the property that there is only one group of order n.

Music

  • '15 Feet of Snow ', in Spanish '15 feet of snow', is a song by the Australian rock musician, Diesel.
  • '15 Seconds' on a single by the American indie pop band Ivy.
  • '15 Minutes of Shame ', in Spanish' '15 Minutes of Shame ', is the debut song written by Kelly Archer, Casey Kessel and Justin Weaver, recorded by American country music artist Kristy Lee Cook.
  • '15 Minutes' is the name of a song by the American country singer Rodney Atkins, as well as the British group The Yeah You's.
  • '15 Minutes to Fame ', in Spanish '15 Minutes to Fame', is a song by the American rock band Saving Abel.

Religions

  • In the Hebrew numbering system, the number 15 is not written according to the usual method, with the letters representing '10' and '5', because those spell one of God's Jewish names. Instead, the date is written with the letters representing '9' and '6'

Science

  • Phosphorus is the chemical element in the periodic table that has the symbol P and atomic number 15.
  • Group 15 of the periodic table is sometimes known as pnictogens.

Sports

  • The best athletes to wear number 15
    Bart Starr, NFL; Thurman Munson, MLB; Carmelo Anthony, NBA; Hal Greer, NBA; Earl Monroe, NBA
  • Rugby. Each team has 15 players on the field at any one time.
  • In tennis, the number 15 represents the first point won in a game.

Number 15 in other languages

How to say or write the number fifteen in Spanish, German, French and other languages.
Spanish: 🔊 (número 15)

quince

German: 🔊 (Anzahl 15)

fünfzehn

French: 🔊 (nombre 15)

quinze

Portuguese: 🔊 (número 15)

quinze

Chinese: 🔊 (数 15)

十五

Arabian: 🔊 (عدد 15)

خمسة عشر

Czech: 🔊 (číslo 15)

patnáct

Korean: 🔊 (번호 15)

십오

Danish: 🔊 (nummer 15)

femten

Hebrew: (מספר 15)

חמש עשרה

Dutch: 🔊 (nummer 15)

vijftien

Japanese: 🔊 (数 15)

十五

Indonesian: 🔊 (jumlah 15)

lima belas

Italian: 🔊 (numero 15)

quindici

Norwegian: 🔊 (nummer 15)

femten

Polish: 🔊 (liczba 15)

piętnaście

Russian: 🔊 (номер 15)

пятнадцать

Turkish: 🔊 (numara 15)

onbeş

Thai: 🔊 (จำนวน 15)

สิบห้า

Ukrainian: 🔊 (номер 15)

п'ятнадцять

Vietnamese: 🔊 (con số 15)

mười lăm

Other languages ...

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Number 15 in News

Buzz: Looking Back At Meghan Markle's Last 15 Years For Her 40th Birthday
Meghan's life has changed dramatically over the past decade — here's a look back at her epic journey to being a royal.View Entire Post › ...
Aug. 4, 2021
BBC: Turner Prize returns to Tate Liverpool after 15 years
The renowned event will be held at the Tate Liverpool gallery in late 2022, it is announced.
July 27, 2021
BBC: Kuss claims Tour de France stage 15 win as Pogacar increases overall lead
Sepp Kuss attacks on the final climb to win stage 15 of the Tour de France, as Tadej Pogacar increases his overall lead.
July 11, 2021
The Sydney Morning Herald: Former South African president Jacob Zuma sentenced to 15 months in jail
South Africa’s highest court on Tuesday sentenced the ex-president to 15 months in jail for failing to appear at a corruption inquiry.
June 29, 2021
CNN: Giant hot air balloon whales and 15 other outdoor art exhibits to see around the world
After Covid-19 shuttered museums and galleries across the globe, the art world is staging a cautious reopening -- which includes a host of new pandemic-friendly, open-air exhibitions and installations.
June 2, 2021

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