The Natural Number 8

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Properties of the Number 8

  • Because 8 is divisible by 2 ...
    • 8 is an even number
    • 8 has parity 0
    • 8 is not an odd number
  • Because 8 can be factored as 2 x 4 ...
    • 8 is a composite number
    • 8 is not a prime number

Alternative Representations of the Number 8

  • Base 2 (binary): 1000
  • Base 8 (octal): 10
  • Base 16 (hexadecimal): 8
  • Roman numeral: VIII
  • Words: eight

Divisors of the Number 8

  • 8 has 4 positive divisors: 1, 2, 4, 8
    • The sum of the positive divisors is 15
  • 8 has 3 proper divisors: 1, 2, 4
    • The sum of the proper divisors is 7
  • 8 is a deficient number since the sum of the proper divisors is less than 8
  • 8 is not a perfect number
  • 8 is not an abundant number

More Properties of the Number 8

  • 8 is not a square number
  • 8 is a cube number (i.e., cube of the natural number 2)
  • 8 is a palindromic number (i.e., the digits are the same forwards and backwards)
  • 8 is a Fibonacci number
  • 8 is not a Lucas number

9:27 am, Monday, May 21, 2012 (EDT; -0400)
Copyright © 2012 D. A. Resler.  All rights reserved.