Number
890
890 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 3
- Digit sum
- 17
- Digital root
- 8
- Palindrome
- No
- Divisor count
- 8
- σ(n) — sum of divisors
- 1,620
Primality
Prime factorization: 2 × 5 × 89
Divisors & multiples
Aliquot sum (sum of proper divisors):
730
Representations
- In words
- eight hundred ninety
- Ordinal
- 890th
- Roman numeral
- DCCCXC
- Binary
- 1101111010
- Octal
- 1572
- Hexadecimal
- 37A
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 890, here are decompositions:
- 3 + 887 = 890
- 7 + 883 = 890
- 13 + 877 = 890
- 31 + 859 = 890
- 37 + 853 = 890
- 61 + 829 = 890
- 67 + 823 = 890
- 79 + 811 = 890
Showing the first eight; more decompositions exist.
Unicode codepoint
ͺ
U+037A
Modifier letter (Lm)
UTF-8 encoding: CD BA (2 bytes).
Hex color
#00037A
RGB(0, 3, 122)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.3.122.