Number
998
998 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 3
- Digit sum
- 26
- Digital root
- 8
- Palindrome
- No
- Divisor count
- 4
- σ(n) — sum of divisors
- 1,500
Primality
Prime factorization: 2 × 499
Divisors & multiples
Aliquot sum (sum of proper divisors):
502
Representations
- In words
- nine hundred ninety-eight
- Ordinal
- 998th
- Roman numeral
- CMXCVIII
- Binary
- 1111100110
- Octal
- 1746
- Hexadecimal
- 3E6
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 998, here are decompositions:
- 7 + 991 = 998
- 31 + 967 = 998
- 61 + 937 = 998
- 79 + 919 = 998
- 139 + 859 = 998
- 211 + 787 = 998
- 229 + 769 = 998
- 241 + 757 = 998
Showing the first eight; more decompositions exist.
Unicode codepoint
Ϧ
U+03E6
Uppercase letter (Lu)
UTF-8 encoding: CF A6 (2 bytes).
Hex color
#0003E6
RGB(0, 3, 230)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.3.230.