Number
804
804 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 3
- Digit sum
- 12
- Digital root
- 3
- Palindrome
- No
- Divisor count
- 12
- σ(n) — sum of divisors
- 1,904
Primality
Prime factorization: 2 2 × 3 × 67
Divisors & multiples
Aliquot sum (sum of proper divisors):
1,100
Representations
- In words
- eight hundred four
- Ordinal
- 804th
- Roman numeral
- DCCCIV
- Binary
- 1100100100
- Octal
- 1444
- Hexadecimal
- 324
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 804, here are decompositions:
- 7 + 797 = 804
- 17 + 787 = 804
- 31 + 773 = 804
- 43 + 761 = 804
- 47 + 757 = 804
- 53 + 751 = 804
- 61 + 743 = 804
- 71 + 733 = 804
Showing the first eight; more decompositions exist.
Unicode codepoint
̤
U+0324
Non-spacing mark (Mn)
UTF-8 encoding: CC A4 (2 bytes).
Hex color
#000324
RGB(0, 3, 36)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.3.36.