Number
1,028
1,028 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 11
- Digital root
- 2
- Palindrome
- No
- Divisor count
- 6
- σ(n) — sum of divisors
- 1,806
Primality
Prime factorization: 2 2 × 257
Divisors & multiples
Aliquot sum (sum of proper divisors):
778
Representations
- In words
- one thousand twenty-eight
- Ordinal
- 1028th
- Roman numeral
- MXXVIII
- Binary
- 10000000100
- Octal
- 2004
- Hexadecimal
- 404
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1028, here are decompositions:
- 7 + 1021 = 1028
- 19 + 1009 = 1028
- 31 + 997 = 1028
- 37 + 991 = 1028
- 61 + 967 = 1028
- 109 + 919 = 1028
- 151 + 877 = 1028
- 199 + 829 = 1028
Showing the first eight; more decompositions exist.
Unicode codepoint
Є
U+0404
Uppercase letter (Lu)
UTF-8 encoding: D0 84 (2 bytes).
Hex color
#000404
RGB(0, 4, 4)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.4.4.