The Natural Number 405

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Properties of the Number 405

  • Because 405 is not divisible by 2 ...
    • 405 is an odd number
    • 405 has parity 1
    • 405 is not an even number
  • Because 405 can be factored as 3 x 135 ...
    • 405 is a composite number
    • 405 is not a prime number

Alternative Representations of the Number 405

  • Base 2 (binary): 110010101
  • Base 8 (octal): 625
  • Base 16 (hexadecimal): 195
  • Roman numeral: CDV
  • Words: four hundred five

Divisors of the Number 405

  • 405 has 10 positive divisors: 1, 3, 5, 9, 15, 27, 45, 81, 135, 405
    • The sum of the positive divisors is 726
  • 405 has 9 proper divisors: 1, 3, 5, 9, 15, 27, 45, 81, 135
    • The sum of the proper divisors is 321
  • 405 is a deficient number since the sum of the proper divisors is less than 405
  • 405 is not a perfect number
  • 405 is not an abundant number

More Properties of the Number 405

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

8:39 pm, Thursday, April 27, 2017 (UTC; +0000)
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