Number
1,404
1,404 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 9
- Digital root
- 9
- Palindrome
- No
- Divisor count
- 24
- σ(n) — sum of divisors
- 3,920
Primality
Prime factorization: 2 2 × 3 3 × 13
Divisors & multiples
All divisors (24)
Aliquot sum (sum of proper divisors):
2,516
Factor pairs (a × b = 1,404)
First multiples
Representations
- In words
- one thousand four hundred four
- Ordinal
- 1404th
- Roman numeral
- MCDIV
- Binary
- 10101111100
- Octal
- 2574
- Hexadecimal
- 57C
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1404, here are decompositions:
- 5 + 1399 = 1404
- 23 + 1381 = 1404
- 31 + 1373 = 1404
- 37 + 1367 = 1404
- 43 + 1361 = 1404
- 83 + 1321 = 1404
- 97 + 1307 = 1404
- 101 + 1303 = 1404
Showing the first eight; more decompositions exist.
Unicode codepoint
ռ
U+057C
Lowercase letter (Ll)
UTF-8 encoding: D5 BC (2 bytes).
Hex color
#00057C
RGB(0, 5, 124)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.124.