21363

21,363 is an odd composite number composed of two prime numbers multiplied together.

What does the number 21363 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

21363 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

Prime factorization of 21363:

3 × 7121

See below for interesting mathematical facts about the number 21363 from the Numbermatics database.


Names of 21363

  • Cardinal: 21363 can be written as Twenty-one thousand, three hundred sixty-three.

Scientific notation

  • Scientific notation: 2.1363 × 104

Factors of 21363

  • Number of distinct prime factors ω(n): 2
  • Total number of prime factors Ω(n): 2
  • Sum of prime factors: 7124

Divisors of 21363

  • Number of divisors d(n): 4
  • Complete list of divisors:
  • Sum of all divisors σ(n): 28488
  • Sum of proper divisors (its aliquot sum) s(n): 7125
  • 21363 is a deficient number, because the sum of its proper divisors (7125) is less than itself. Its deficiency is 14238

Bases of 21363

  • Binary: 1010011011100112
  • Hexadecimal: 0x5373
  • Base-36: GHF

Squares and roots of 21363

  • 21363 squared (213632) is 456377769
  • 21363 cubed (213633) is 9749598279147
  • The square root of 21363 is 146.1608702765
  • The cube root of 21363 is 27.7473010929

Scales and comparisons

How big is 21363?
  • 21,363 seconds is equal to 5 hours, 56 minutes, 3 seconds.
  • To count from 1 to 21,363 would take you about five 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. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

  • A cube with a volume of 21363 cubic inches would be around 2.3 feet tall.

Recreational maths with 21363

  • 21363 backwards is 36312
  • The number of decimal digits it has is: 5
  • The sum of 21363's digits is 15
  • More coming soon!

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The information we have on file for 21363 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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