Number
1,284
1,284 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 15
- Digital root
- 6
- Palindrome
- No
- Divisor count
- 12
- σ(n) — sum of divisors
- 3,024
Primality
Prime factorization: 2 2 × 3 × 107
Divisors & multiples
Aliquot sum (sum of proper divisors):
1,740
First multiples
Representations
- In words
- one thousand two hundred eighty-four
- Ordinal
- 1284th
- Roman numeral
- MCCLXXXIV
- Binary
- 10100000100
- Octal
- 2404
- Hexadecimal
- 504
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1284, here are decompositions:
- 5 + 1279 = 1284
- 7 + 1277 = 1284
- 47 + 1237 = 1284
- 53 + 1231 = 1284
- 61 + 1223 = 1284
- 67 + 1217 = 1284
- 71 + 1213 = 1284
- 83 + 1201 = 1284
Showing the first eight; more decompositions exist.
Unicode codepoint
Ԅ
U+0504
Uppercase letter (Lu)
UTF-8 encoding: D4 84 (2 bytes).
Hex color
#000504
RGB(0, 5, 4)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.4.