The Natural Number 90

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Properties of the Number 90

  • Because 90 is divisible by 2 ...
    • 90 is an even number
    • 90 has parity 0
    • 90 is not an odd number
  • Because 90 can be factored as 2 x 45 ...
    • 90 is a composite number
    • 90 is not a prime number

Alternative Representations of the Number 90

  • Base 2 (binary): 1011010
  • Base 8 (octal): 132
  • Base 16 (hexadecimal): 5A
  • Roman numeral: XC
  • Words: ninety

Divisors of the Number 90

  • 90 has 12 positive divisors: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90
    • The sum of the positive divisors is 234
  • 90 has 11 proper divisors: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45
    • The sum of the proper divisors is 144
  • 90 is not a deficient number
  • 90 is not a perfect number
  • 90 is an abundant number since the sum of the proper divisors is greater than 90

More Properties of the Number 90

  • 90 is not a square number
  • 90 is not a cube number
  • 90 is not a palindromic number
  • 90 is not a Fibonacci number
  • 90 is not a Lucas number

4:31 am, Friday, April 28, 2017 (UTC; +0000)
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