# Everything about number 20

Discover a lot of information on the number 20: properties, mathematical operations, how to write it, symbolism, numerology, representations and many other interesting things!

## Mathematical properties of 20

Is 20 a prime number? No
Is 20 a perfect number? No
Number of divisors 6
List of dividers 1, 2, 4, 5, 10, 20
Sum of divisors 42
Prime factorization 22 x 5
Prime factors 2, 5

## How to write / spell 20 in letters?

In letters, the number 20 is written as: Twenty. And in other languages? how does it spell?

20 in other languages
Write 20 in english Twenty
Write 20 in french Vingt
Write 20 in spanish Veinte
Write 20 in portuguese Vinte

## Decomposition of the number 20

The number 20 is composed of:

1 iteration of the number 2 : The number 2 (two) represents double, association, cooperation, union, complementarity. It is the symbol of duality.... Find out more about the number 2

1 iteration of the number 0 : ... Find out more about the number 0

## Mathematical representations and links

Other ways to write 20
In letter Twenty
In roman numeral XX
In binary 10100
In octal 24
In US dollars USD 20.00 (\$)
In euros 20,00 EUR (€)
Some related numbers
Previous number 19
Next number 21
Next prime number 23

## Mathematical operations

Operations and solutions
20*2 = 40 The double of 20 is 40
20*3 = 60 The triple of 20 is 60
20/2 = 10 The half of 20 is 10.000000
20/3 = 6.6666666666667 The third of 20 is 6.666667
202 = 400 The square of 20 is 400.000000
203 = 8000 The cube of 20 is 8000.000000
√20 = 4.4721359549996 The square root of 20 is 4.472136
log(20) = 2.995732273554 The natural (Neperian) logarithm of 20 is 2.995732
log10(20) = 1.301029995664 The decimal logarithm (base 10) of 20 is 1.301030
sin(20) = 0.91294525072763 The sine of 20 is 0.912945
cos(20) = 0.40808206181339 The cosine of 20 is 0.408082
tan(20) = 2.2371609442247 The tangent of 20 is 2.237161