21,364 is an even composite number composed of three prime numbers multiplied together.

What does the number 21364 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 18 divisors.

21364 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eighteen divisors.

Prime factorization of 21364:

22 × 72 × 109

(2 × 2 × 7 × 7 × 109)

See below for interesting mathematical facts about the number 21364 from the Numbermatics database.

Names of 21364

  • Cardinal: 21364 can be written as Twenty-one thousand, three hundred sixty-four.

Scientific notation

  • Scientific notation: 2.1364 × 104

Factors of 21364

  • Number of distinct prime factors ω(n): 3
  • Total number of prime factors Ω(n): 5
  • Sum of prime factors: 118

Divisors of 21364

  • Number of divisors d(n): 18
  • Complete list of divisors:
  • Sum of all divisors σ(n): 43890
  • Sum of proper divisors (its aliquot sum) s(n): 22526
  • 21364 is an abundant number, because the sum of its proper divisors (22526) is greater than itself. Its abundance is 1162

Bases of 21364

  • Binary: 1010011011101002
  • Hexadecimal: 0x5374
  • Base-36: GHG

Squares and roots of 21364

  • 21364 squared (213642) is 456420496
  • 21364 cubed (213643) is 9750967476544
  • The square root of 21364 is 146.1642911247
  • The cube root of 21364 is 27.7477340357

Scales and comparisons

How big is 21364?
  • 21,364 seconds is equal to 5 hours, 56 minutes, 4 seconds.
  • To count from 1 to 21,364 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 21364 cubic inches would be around 2.3 feet tall.

Recreational maths with 21364

  • 21364 backwards is 46312
  • The number of decimal digits it has is: 5
  • The sum of 21364's digits is 16
  • More coming soon!

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The information we have on file for 21364 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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