The Natural Number 640

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Properties of the Number 640

  • Because 640 is divisible by 2 ...
    • 640 is an even number
    • 640 has parity 0
    • 640 is not an odd number
  • Because 640 can be factored as 2 x 320 ...
    • 640 is a composite number
    • 640 is not a prime number

Alternative Representations of the Number 640

  • Base 2 (binary): 1010000000
  • Base 8 (octal): 1200
  • Base 16 (hexadecimal): 280
  • Roman numeral: DCXL
  • Words: six hundred forty

Divisors of the Number 640

  • 640 has 16 positive divisors: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640
    • The sum of the positive divisors is 1530
  • 640 has 15 proper divisors: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320
    • The sum of the proper divisors is 890
  • 640 is not a deficient number
  • 640 is not a perfect number
  • 640 is an abundant number since the sum of the proper divisors is greater than 640

More Properties of the Number 640

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

3:33 pm, Saturday, May 27, 2017 (UTC; +0000)
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