Number
530
530 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
- 972
Primality
Prime factorization: 2 × 5 × 53
Divisors & multiples
Aliquot sum (sum of proper divisors):
442
Representations
- In words
- five hundred thirty
- Ordinal
- 530th
- Roman numeral
- DXXX
- Binary
- 1000010010
- Octal
- 1022
- Hexadecimal
- 212
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 530, here are decompositions:
- 7 + 523 = 530
- 31 + 499 = 530
- 43 + 487 = 530
- 67 + 463 = 530
- 73 + 457 = 530
- 97 + 433 = 530
- 109 + 421 = 530
- 151 + 379 = 530
Showing the first eight; more decompositions exist.
Unicode codepoint
Ȓ
U+0212
Uppercase letter (Lu)
UTF-8 encoding: C8 92 (2 bytes).
Hex color
#000212
RGB(0, 2, 18)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.2.18.