Number 20

Representations of 20
Greek numeral
κ
Arabic numeral
٢٠
Roman numeral
XX
Maya numeral
●
ↂ
Chinese numeral
二十
Hebrew numeral
כ
20 in different numeral systems
Binary
10100
Base-3
202
Base-4
110
Base-5
40
Base-6
32
Base-7
26
Base-8
24
Duodecimal
18
Hex
14
Vigesimal
10
Base-24
k
Base-36
k
Negabinary
10100
Factorization
Prime factors
2, 5
Divisors
1, 2, 4, 5, 10, 20
Sum of divisors other than 20
22
Product of prime factors
20 = 2 x 2 x 5
Characteristics
Difference of 2 squares Harshad Even Composite Abundant
Related primes
Number 20 prime
71
Prime number before 20
19
Prime number after 20
23