Number
168
168 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 3
- Digit sum
- 15
- Digital root
- 6
- Palindrome
- No
- Divisor count
- 16
- σ(n) — sum of divisors
- 480
Primality
Prime factorization: 2 3 × 3 × 7
Divisors & multiples
Aliquot sum (sum of proper divisors):
312
Representations
- In words
- one hundred sixty-eight
- Ordinal
- 168th
- Roman numeral
- CLXVIII
- Binary
- 10101000
- Octal
- 250
- Hexadecimal
- A8
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 168, here are decompositions:
- 5 + 163 = 168
- 11 + 157 = 168
- 17 + 151 = 168
- 19 + 149 = 168
- 29 + 139 = 168
- 31 + 137 = 168
- 37 + 131 = 168
- 41 + 127 = 168
Showing the first eight; more decompositions exist.
Unicode codepoint
¨
U+00A8
Modifier symbol (Sk)
UTF-8 encoding: C2 A8 (2 bytes).
Hex color
#0000A8
RGB(0, 0, 168)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.168.