Number
978
978 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 3
- Digit sum
- 24
- Digital root
- 6
- Palindrome
- No
- Divisor count
- 8
- σ(n) — sum of divisors
- 1,968
Primality
Prime factorization: 2 × 3 × 163
Divisors & multiples
Aliquot sum (sum of proper divisors):
990
Representations
- In words
- nine hundred seventy-eight
- Ordinal
- 978th
- Roman numeral
- CMLXXVIII
- Binary
- 1111010010
- Octal
- 1722
- Hexadecimal
- 3D2
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 978, here are decompositions:
- 7 + 971 = 978
- 11 + 967 = 978
- 31 + 947 = 978
- 37 + 941 = 978
- 41 + 937 = 978
- 59 + 919 = 978
- 67 + 911 = 978
- 71 + 907 = 978
Showing the first eight; more decompositions exist.
Unicode codepoint
ϒ
U+03D2
Uppercase letter (Lu)
UTF-8 encoding: CF 92 (2 bytes).
Hex color
#0003D2
RGB(0, 3, 210)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.3.210.