number.wiki
Number

36

36 is a composite number, even, a calendar year.

Abundant Number Harshad / Niven Perfect Square Powerful Number Triangular Year

Properties

Parity
Even
Digit count
2
Digit sum
9
Digital root
9
Palindrome
No
Divisor count
9
σ(n) — sum of divisors
91

Primality

Prime factorization: 2 2 × 3 2

Divisors & multiples

All divisors (9)
1 · 2 · 3 · 4 · 6 · 9 · 12 · 18 · 36
Aliquot sum (sum of proper divisors): 55
Factor pairs (a × b = 36)
1 × 36
2 × 18
3 × 12
4 × 9
6 × 6
First multiples
36 · 72 · 108 · 144 · 180 · 216 · 252 · 288 · 324 · 360

Representations

In words
thirty-six
Ordinal
36th
Roman numeral
XXXVI
Binary
100100
Octal
44
Hexadecimal
24

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 36, here are decompositions:

  • 5 + 31 = 36
  • 7 + 29 = 36
  • 13 + 23 = 36
  • 17 + 19 = 36
ASCII character

As an ASCII codepoint, 36 is $. Printable ASCII character $.

Hex color
#000024
RGB(0, 0, 36)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.36.