Number
170
170 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 3
- Digit sum
- 8
- Digital root
- 8
- Palindrome
- No
- Divisor count
- 8
- σ(n) — sum of divisors
- 324
Primality
Prime factorization: 2 × 5 × 17
Divisors & multiples
Aliquot sum (sum of proper divisors):
154
Representations
- In words
- one hundred seventy
- Ordinal
- 170th
- Roman numeral
- CLXX
- Binary
- 10101010
- Octal
- 252
- Hexadecimal
- AA
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 170, here are decompositions:
- 3 + 167 = 170
- 7 + 163 = 170
- 13 + 157 = 170
- 19 + 151 = 170
- 31 + 139 = 170
- 43 + 127 = 170
- 61 + 109 = 170
- 67 + 103 = 170
Showing the first eight; more decompositions exist.
Unicode codepoint
ª
U+00AA
Other letter (Lo)
UTF-8 encoding: C2 AA (2 bytes).
Hex color
#0000AA
RGB(0, 0, 170)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.170.