Number
188
188 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 3
- Digit sum
- 17
- Digital root
- 8
- Palindrome
- No
- Divisor count
- 6
- σ(n) — sum of divisors
- 336
Primality
Prime factorization: 2 2 × 47
Divisors & multiples
Aliquot sum (sum of proper divisors):
148
Representations
- In words
- one hundred eighty-eight
- Ordinal
- 188th
- Roman numeral
- CLXXXVIII
- Binary
- 10111100
- Octal
- 274
- Hexadecimal
- BC
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 188, here are decompositions:
- 7 + 181 = 188
- 31 + 157 = 188
- 37 + 151 = 188
- 61 + 127 = 188
- 79 + 109 = 188
Unicode codepoint
¼
U+00BC
Other number (No)
UTF-8 encoding: C2 BC (2 bytes).
Hex color
#0000BC
RGB(0, 0, 188)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.188.