number.wiki
Number

38

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

Deficient Number Squarefree Year

Properties

Parity
Even
Digit count
2
Digit sum
11
Digital root
2
Palindrome
No
Divisor count
4
σ(n) — sum of divisors
60

Primality

Prime factorization: 2 × 19

Divisors & multiples

All divisors (4)
1 · 2 · 19 · 38
Aliquot sum (sum of proper divisors): 22
Factor pairs (a × b = 38)
1 × 38
2 × 19
First multiples
38 · 76 · 114 · 152 · 190 · 228 · 266 · 304 · 342 · 380

Representations

In words
thirty-eight
Ordinal
38th
Roman numeral
XXXVIII
Binary
100110
Octal
46
Hexadecimal
26

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 38, here are decompositions:

  • 7 + 31 = 38
  • 19 + 19 = 38
ASCII character

As an ASCII codepoint, 38 is &. Printable ASCII character &.

Hex color
#000026
RGB(0, 0, 38)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.38.