28928

28,928 is an even composite number composed of two prime numbers multiplied together.

28928 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of eighteen divisors.

Prime factorization of 28928:

28 × 113

(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 113)

See below for interesting mathematical facts about the number 28928 from the Numbermatics database.

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Names Factors Divisors Scales Roots Fun

Names of 28928

  • Cardinal: 28928 can be written as Twenty-eight thousand, nine hundred twenty-eight.

Scientific notation

  • Scientific notation: 2.8928 × 104

Factors of 28928

  • Number of distinct prime factors ω(n): 2
  • Total number of prime factors Ω(n): 9
  • Sum of prime factors: 115

Divisors of 28928

  • Number of divisors d(n): 18
  • Complete list of divisors:
  • Sum of all divisors σ(n): 58254
  • Sum of proper divisors (its aliquot sum) s(n): 29326
  • 28928 is an abundant number, because the sum of its proper divisors (29326) is greater than itself. Its abundance is 398

Bases of 28928

  • Binary: 111000100000000 2
  • Hexadecimal: 0x7100
  • Base-36: MBK

Squares and roots of 28928

  • 28928 squared (289282) is 836829184
  • 28928 cubed (289283) is 24207794634752
  • The square root of 28928 is 170.0823330037
  • The cube root of 28928 is 30.6977211153

Scales and comparisons

How big is 28928?
  • 28,928 seconds is equal to 8 hours, 2 minutes, 8 seconds.
  • To count from 1 to 28,928 would take you about eight hours.

    This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000.

    Note: we do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!

  • A cube with a volume of 28928 cubic inches would be around 2.6 feet tall.

Recreational maths with 28928

  • 28928 backwards is 82982
  • The number of decimal digits it has is: 5
  • The sum of 28928's digits is 29
  • More coming soon!

The information we have on file for 28928 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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