Number 40

Representations of 40
Greek numeral
μ
Arabic numeral
٤٠
Roman numeral
XL
Maya numeral
●●
ↂ
Chinese numeral
四十
Hebrew numeral
מ
40 in different numeral systems
Binary
101000
Base-3
1111
Base-4
220
Base-5
130
Base-6
104
Base-7
55
Base-8
50
Hex
28
Base-24
1g
Base-36
14
Factorization
Prime factors
2, 5
Divisors
1, 2, 4, 5, 8, 10, 20, 40
Sum of divisors other than 40
50
Product of prime factors
40 = 2 x 2 x 2 x 5
Characteristics
Octogonal Even Composite
Related primes
Number 40 prime
173
Prime number before 40
37
Prime number after 40
41