Number
1,356
1,356 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
- 3,192
Primality
Prime factorization: 2 2 × 3 × 113
Divisors & multiples
Aliquot sum (sum of proper divisors):
1,836
First multiples
Representations
- In words
- one thousand three hundred fifty-six
- Ordinal
- 1356th
- Roman numeral
- MCCCLVI
- Binary
- 10101001100
- Octal
- 2514
- Hexadecimal
- 54C
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1356, here are decompositions:
- 29 + 1327 = 1356
- 37 + 1319 = 1356
- 53 + 1303 = 1356
- 59 + 1297 = 1356
- 67 + 1289 = 1356
- 73 + 1283 = 1356
- 79 + 1277 = 1356
- 97 + 1259 = 1356
Showing the first eight; more decompositions exist.
Unicode codepoint
Ռ
U+054C
Uppercase letter (Lu)
UTF-8 encoding: D5 8C (2 bytes).
Hex color
#00054C
RGB(0, 5, 76)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.76.