20
Number 20 properties
- 20 is an even number.
- 20 is a Harshad number, which means it is divisible by the sum of its digits (20 = 2, and 20 is divisible by 2).
Number 20 - properties and curiosities
20 (number)
Prime factorization
Prime factorization of 20: 2^2 × 5.
Divisors
Divisor count: 6
1, 2, 4, 5, 10, 20
Factors of 20 are: 1, 2, 4, 5, 10, 20.
Representations
In octal, 20 is represented as 24.
In binary, 20 is represented as 10100.
In hex, 20 is represented as 14.
Roman numeral: XX
Curiosities
- 20 is divisible by the sum of its digits.
Related numbers
Quick answers
Is 20 prime?
No, 20 is not prime.
What are the factors of 20?
1, 2, 4, 5, 10, 20
What is 20 in binary?
10100