number.wiki
Number

1,804

1,804 is a composite number, even, a calendar year.

Deficient Number Year

Properties

Parity
Even
Digit count
4
Digit sum
13
Digital root
4
Palindrome
No
Divisor count
12
σ(n) — sum of divisors
3,528

Primality

Prime factorization: 2 2 × 11 × 41

Divisors & multiples

All divisors (12)
1 · 2 · 4 · 11 · 22 · 41 · 44 · 82 · 164 · 451 · 902 · 1804
Aliquot sum (sum of proper divisors): 1,724
Factor pairs (a × b = 1,804)
1 × 1804
2 × 902
4 × 451
11 × 164
22 × 82
41 × 44
First multiples
1,804 · 3,608 · 5,412 · 7,216 · 9,020 · 10,824 · 12,628 · 14,432 · 16,236 · 18,040

Representations

In words
one thousand eight hundred four
Ordinal
1804th
Roman numeral
MDCCCIV
Binary
11100001100
Octal
3414
Hexadecimal
70C

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1804, here are decompositions:

  • 3 + 1801 = 1804
  • 17 + 1787 = 1804
  • 71 + 1733 = 1804
  • 83 + 1721 = 1804
  • 107 + 1697 = 1804
  • 137 + 1667 = 1804
  • 167 + 1637 = 1804
  • 191 + 1613 = 1804

Showing the first eight; more decompositions exist.

Unicode codepoint
܌
U+070C
Other punctuation (Po)

UTF-8 encoding: DC 8C (2 bytes).

Lookup U+070C on Compart ↗ Lookup on FileFormat.Info ↗
Hex color
#00070C
RGB(0, 7, 12)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.7.12.