Number
1,340
1,340 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 8
- Digital root
- 8
- Palindrome
- No
- Divisor count
- 12
- σ(n) — sum of divisors
- 2,856
Primality
Prime factorization: 2 2 × 5 × 67
Divisors & multiples
Aliquot sum (sum of proper divisors):
1,516
First multiples
Representations
- In words
- one thousand three hundred forty
- Ordinal
- 1340th
- Roman numeral
- MCCCXL
- Binary
- 10100111100
- Octal
- 2474
- Hexadecimal
- 53C
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1340, here are decompositions:
- 13 + 1327 = 1340
- 19 + 1321 = 1340
- 37 + 1303 = 1340
- 43 + 1297 = 1340
- 61 + 1279 = 1340
- 103 + 1237 = 1340
- 109 + 1231 = 1340
- 127 + 1213 = 1340
Showing the first eight; more decompositions exist.
Unicode codepoint
Լ
U+053C
Uppercase letter (Lu)
UTF-8 encoding: D4 BC (2 bytes).
Hex color
#00053C
RGB(0, 5, 60)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.60.