Number
130
130 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 3
- Digit sum
- 4
- Digital root
- 4
- Palindrome
- No
- Divisor count
- 8
- σ(n) — sum of divisors
- 252
Primality
Prime factorization: 2 × 5 × 13
Divisors & multiples
Aliquot sum (sum of proper divisors):
122
Representations
- In words
- one hundred thirty
- Ordinal
- 130th
- Roman numeral
- CXXX
- Binary
- 10000010
- Octal
- 202
- Hexadecimal
- 82
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 130, here are decompositions:
- 3 + 127 = 130
- 17 + 113 = 130
- 23 + 107 = 130
- 29 + 101 = 130
- 41 + 89 = 130
- 47 + 83 = 130
- 59 + 71 = 130
Unicode codepoint
U+0082
Control character (Cc)
UTF-8 encoding: C2 82 (2 bytes).
Hex color
#000082
RGB(0, 0, 130)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.130.