Number
1,224
1,224 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
- 3,510
Primality
Prime factorization: 2 3 × 3 2 × 17
Divisors & multiples
All divisors (24)
Aliquot sum (sum of proper divisors):
2,286
Factor pairs (a × b = 1,224)
First multiples
Representations
- In words
- one thousand two hundred twenty-four
- Ordinal
- 1224th
- Roman numeral
- MCCXXIV
- Binary
- 10011001000
- Octal
- 2310
- Hexadecimal
- 4C8
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1224, here are decompositions:
- 7 + 1217 = 1224
- 11 + 1213 = 1224
- 23 + 1201 = 1224
- 31 + 1193 = 1224
- 37 + 1187 = 1224
- 43 + 1181 = 1224
- 53 + 1171 = 1224
- 61 + 1163 = 1224
Showing the first eight; more decompositions exist.
Unicode codepoint
ӈ
U+04C8
Lowercase letter (Ll)
UTF-8 encoding: D3 88 (2 bytes).
Hex color
#0004C8
RGB(0, 4, 200)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.4.200.