Number
340
340 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 3
- Digit sum
- 7
- Digital root
- 7
- Palindrome
- No
- Divisor count
- 12
- σ(n) — sum of divisors
- 756
Primality
Prime factorization: 2 2 × 5 × 17
Divisors & multiples
Aliquot sum (sum of proper divisors):
416
Representations
- In words
- three hundred forty
- Ordinal
- 340th
- Roman numeral
- CCCXL
- Binary
- 101010100
- Octal
- 524
- Hexadecimal
- 154
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 340, here are decompositions:
- 3 + 337 = 340
- 23 + 317 = 340
- 29 + 311 = 340
- 47 + 293 = 340
- 59 + 281 = 340
- 71 + 269 = 340
- 83 + 257 = 340
- 89 + 251 = 340
Showing the first eight; more decompositions exist.
Unicode codepoint
Ŕ
U+0154
Uppercase letter (Lu)
UTF-8 encoding: C5 94 (2 bytes).
Hex color
#000154
RGB(0, 1, 84)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.84.