Number
1,345
1,345 is a composite number, odd, a calendar year.
Properties
- Parity
- Odd
- Digit count
- 4
- Digit sum
- 13
- Digital root
- 4
- Palindrome
- No
- Divisor count
- 4
- σ(n) — sum of divisors
- 1,620
Primality
Prime factorization: 5 × 269
Divisors & multiples
Aliquot sum (sum of proper divisors):
275
First multiples
Representations
- In words
- one thousand three hundred forty-five
- Ordinal
- 1345th
- Roman numeral
- MCCCXLV
- Binary
- 10101000001
- Octal
- 2501
- Hexadecimal
- 541
Also seen as
Unicode codepoint
Ձ
U+0541
Uppercase letter (Lu)
UTF-8 encoding: D5 81 (2 bytes).
Hex color
#000541
RGB(0, 5, 65)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.65.