Number 20

Number 20 is said 🔊, write in letters as follows: twenty . Ordinal number 20th is said 🔊 and write: twentieth. Phone prefix +20 or 0020. The meaning of number 20: Basic maths, advanced mathematics and properties, computer science, numerology, codes and images, writing and naming in other languages, other interesting facts and comments. Number 20 in News.

Useful information about number 20

The decimal (Arabic) number 20 converted to a Roman number is XX. Roman and decimal number conversions.
The number 20 converted to a Mayan number is mayan number 20
Decimal and Mayan number conversions.

Weight conversion

20 kilograms (kg) = 44.1 pounds (lb)
20 pounds (lb) = 9.1 kilograms (kg)

Length conversion

20 kilometers (km) equals to 12.427 miles (mi).
20 miles (mi) equals to 32.187 kilometers (km).
20 meters (m) equals to 32.187 feet (ft).
20 feet (ft) equals 6.096 meters (m).
20 centimeters (cm) equals to 7.9 inches (in).
20 inches (in) equals to 50.8 centimeters (cm).

Temperature conversion

20° Fahrenheit (°F) equals to 68° Celsius (°C)
20° Celsius (°C) equals to -6.7° Fahrenheit (°F)

Power conversion

20 Horsepower (hp) equals to 14.71 kilowatts (kW)
20 kilowatts (kW) equals to 27.20 horsepower (hp)

Codes and images of the number 20

Number 20 morse code: ..--- -----
Sign language for number 20:
Sign language for number 20 Sign language for number 20
Images of the number
Image (1) of the numberImage (2) of the number
Number 20 black image Number 20 red image
There is no copyright for these images. Number 20 infographic.
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Gregorian, Hebrew, Islamic, Persian and Buddhist year (calendar)

Gregorian year 20 is Buddhist year 563.
Buddhist year 20 is Gregorian year 523 a. C.
Gregorian year 20 is Islamic year -621 or -620.
Islamic year 20 is Gregorian year 640 or 641.
Gregorian year 20 is Persian year -603 or -602.
Persian year 20 is Gregorian 641 or 642.
Gregorian year 20 is Hebrew year 3780 or 3781.
Hebrew year 20 is Gregorian year 3740 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. 20


Multiplication table of 20

20 multiplied by two equals 40 (20 x 2 = 40).
20 multiplied by three equals 60 (20 x 3 = 60).
20 multiplied by four equals 80 (20 x 4 = 80).
20 multiplied by five equals 100 (20 x 5 = 100).
show multiplications by 6, 7, 8, 9 ...

Fractions: decimal fraction and common fraction

Fraction table of 20

Half of 20 is 10 (20 / 2 = 10).
One third of 20 is 6,6667 (20 / 3 = 6,6667 = 6 2/3).
One quarter of 20 is 5 (20 / 4 = 5).
One fifth of 20 is 4 (20 / 5 = 4).
show fractions by 6, 7, 8, 9 ...



Advanced math operations

Is Prime?

The number 20 is not a prime number. The closest prime numbers are 19, 23.
20th prime number in order is 71.

Factorization and dividers

Factorization 2 * 2 * 5 = 20
Divisors of number 20 are 1 , 2 , 4 , 5 , 10 , 20
Total Divisors 6.
Sum of Divisors 42.


The second power of 202 is 400.
The third power of 203 is 8.000.


The square root √20 is 4,472136.
The cube root of 320 is 2,714418.


The natural logarithm of No. ln 20 = loge 20 = 2,995732.
The logarithm to base 10 of No. log10 20 = 1,30103.
The Napierian logarithm of No. log1/e 20 = -2,995732.

Trigonometric functions

The cosine of 20 is 0,408082.
The sine of 20 is 0,912945.
The tangent of 20 is 2,237161.

Properties of the number 20

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

Number 20 in Computer Science

Code typeCode value
Port 20/TCPFTP Protocol (data) - port for transferring FTP data
Unix timeUnix time 20 is equal to Thursday Jan. 1, 1970, 12:20 a.m. GMT
IPv4, IPv6Number 20 internet address in dotted format v4, v6 ::14
20 Decimal = 10100 Binary
20 Decimal = 202 Ternary
20 Decimal = 24 Octal
20 Decimal = 14 Hexadecimal (0x14 hex)
20 BASE64MjA=
20 MD598f13708210194c475687be6106a3b84
20 SHA191032ad7bbcb6cf72875e8e8207dcfba80173f7c
More SHA codes related to the number 20 ...

Numerology 20

The meaning of the number 2 (two), numerology 2

Character frequency 2: 1

The number two (2) needs above all to feel and to be. It represents the couple, duality, family, private and social life. He/she really enjoys home life and family gatherings. The number 2 denotes a sociable, hospitable, friendly, caring and affectionate person. It is the sign of empathy, cooperation, adaptability, consideration for others, supersensitivity towards the needs of others. The number 2 (two) is also the symbol of balance, togetherness and receptivity. He/she is a good partner, colleague or companion; he/she also plays a wonderful role as a referee or mediator. Number 2 person is modest, sincere, spiritually influenced and a good diplomat. It represents intuition and vulnerability.
More about the meaning of the number 2 (two), numerology 2 ...

The meaning of the number 0 (zero), numerology 0

Character frequency 0: 1

Everything begins at the zero point and at the zero point everything ends. Many times we do not know the end, but we know the beginning, it is at the zero point.
More about the meaning of the number 0 (zero), numerology 0 ...

Interesting facts about the number 20


  • (20) Massalia is asteroid number 20. It was discovered by A. de Gasparis from Obs. Capodimonte Astronomical on 9/19/1852.

Aircrafts and flights

  • 01/18/1960 the Capital Airlines plane, flight number 20, Vickers Viscount 745D crashed in Holdcroft, Virginia, US 46 passengers and 4 crew members died.

Areas, mountains and surfaces

  • The total area of Ireland is 32,595 square miles (84,421 square km). Country Ireland and United Kingdom (Northern Ireland). 20th largest island in the world.



  • It is the number of teeth in the deciduous dentition or milk teeth, it is 20.

Distances between cities

  • There is a 13 miles (20 km) direct distance between Abū Ghurayb (Iraq) and Baghdad (Iraq).
  • There is a 13 miles (20 km) direct distance between Álvaro Obregón (Mexico) and Ciudad Nezahualcoyotl (Mexico).
  • There is a 20 miles (32 km) direct distance between Álvaro Obregón (Mexico) and Ecatepec (Mexico).
  • There is a 20 miles (31 km) direct distance between Bucheon-si (South Korea) and Seongnam-si (South Korea).
  • There is a 13 miles (20 km) direct distance between Delhi (India) and Ghāziābād (India).
  • There is a 13 miles (20 km) direct distance between Depok (Indonesia) and Jakarta (Indonesia).
  • There is a 20 miles (32 km) direct distance between Depok (Indonesia) and Tangerang (Indonesia).
  • There is a 20 miles (32 km) direct distance between Incheon (South Korea) and Suwon-si (South Korea).
  • There is a 20 miles (32 km) direct distance between Kalyān (India) and Mumbai (India).

In other fields

  • 20 lustrums is a century.
  • In Japanese tradition, the age of majority is set at 20 years.


  • 20 is the number of rooted trees with 6 vertices.

Mobile and telephony

  • Number 20 or +20 or 0020 is a dial the international call prefix for Egypt. (00/+) is dial the international call prefix.


  • 'Matchbox Twenty' (also known as MB20, MBT, Matchbox Twenty and originally as Matchbox 20) is an American alternative rock band originally from Orlando, Florida. When Paul Douchette was working in a restaurant, he served a customer with patches on his clothes and could only read the word Matchbox. 20 was the number seen on this character's shirt.
  • '20 Margaritas' is a song by the country music duo Big & Rich.
  • '20 Good Reasons ', in Spanish '20 good reasons', was the first single from Thirsty Merc's second album Slideshows.
  • '20 Block ', in Spanish '20 Block', is a song by the American pop punk band A Loss for Words (formerly Last Ride).
  • '20 Size 'is a song by the Scottish post-rock band Mogwai.


  • Calcium is the chemical element in the periodic table that has the symbol Ca and atomic number 20.


  • The best athletes to wear number 20
    Barry Sanders, NFL; Lou Brock, MLB; Mike Schmidt, MLB; Frank Robinson, MLB; Tony Stewart, NASCAR; Luc Robitaille, NHL; Ed Reed, NFL; Rob Niedermayer, NHL; Josh Gibson, baseball

Number 20 in other languages

How to say or write the number twenty in Spanish, German, French and other languages.
Spanish: 🔊 (número 20)


German: 🔊 (Anzahl 20)


French: 🔊 (nombre 20)


Portuguese: 🔊 (número 20)


Chinese: 🔊 (数 20)


Other languages ...

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Number 20 in News

The Sydney Morning Herald: Only 20 days old, Tigsti already starving as famine stalks Ethiopia
Tigsti’s mother walked for 12 days to get her famished newborn to a clinic in Tigray. The UN says this is the world’s worst famine conditions in a decade. ...
June 13, 2021
France24: Frenchman who murdered child sentenced to 20 years in prison for second killing
A former French soldier who has admitted to killing an eight-year-old girl in a case that shook the country nearly four years ago was sentenced to 20 years in prison on Tuesday for beating a fellow soldier to death just a few months before. ...
May 12, 2021
Buzz: A Train Line In Mexico City Collapsed, Killing At Least 20 People
“There are unfortunately children among the dead,” the city's mayor said.View Entire Post › ...
May 4, 2021
BBC: Covid: More than 20 million living in areas with zero deaths
Analysis by the BBC suggests the UK is moving into a new phase of the pandemic. ...
April 30, 2021
CNN: Attorney: We lost count of how many shots we heard in 20 seconds of bodycam
Andrew Brown's family attorneys Benjamin Crump and Chantel Cherry-Lassiter discuss what was on the 20 second snippet of bodycam footage Brown's relatives were able to view and the decision by the Elizabeth City, North Carolina attorney's office to not show the family the full video. ...
April 26, 2021

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