Number
845
845 is a composite number, odd, a calendar year.
Properties
- Parity
- Odd
- Digit count
- 3
- Digit sum
- 17
- Digital root
- 8
- Palindrome
- No
- Divisor count
- 6
- σ(n) — sum of divisors
- 1,098
Primality
Prime factorization: 5 × 13 2
Divisors & multiples
Aliquot sum (sum of proper divisors):
253
Representations
- In words
- eight hundred forty-five
- Ordinal
- 845th
- Roman numeral
- DCCCXLV
- Binary
- 1101001101
- Octal
- 1515
- Hexadecimal
- 34D
Also seen as
Unicode codepoint
͍
U+034D
Non-spacing mark (Mn)
UTF-8 encoding: CD 8D (2 bytes).
Hex color
#00034D
RGB(0, 3, 77)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.3.77.