21844

21,844 is an even composite number composed of three prime numbers multiplied together.

What does the number 21844 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 12 divisors.

21844 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twelve divisors.

Prime factorization of 21844:

22 × 43 × 127

(2 × 2 × 43 × 127)

See below for interesting mathematical facts about the number 21844 from the Numbermatics database.


Names of 21844

  • Cardinal: 21844 can be written as Twenty-one thousand, eight hundred forty-four.

Scientific notation

  • Scientific notation: 2.1844 × 104

Factors of 21844

  • Number of distinct prime factors ω(n): 3
  • Total number of prime factors Ω(n): 4
  • Sum of prime factors: 172

Divisors of 21844

  • Number of divisors d(n): 12
  • Complete list of divisors:
  • Sum of all divisors σ(n): 39424
  • Sum of proper divisors (its aliquot sum) s(n): 17580
  • 21844 is a deficient number, because the sum of its proper divisors (17580) is less than itself. Its deficiency is 4264

Bases of 21844

  • Binary: 1010101010101002
  • Hexadecimal: 0x5554
  • Base-36: GUS

Squares and roots of 21844

  • 21844 squared (218442) is 477160336
  • 21844 cubed (218443) is 10423090379584
  • The square root of 21844 is 147.7971582947
  • The cube root of 21844 is 27.9540061227

Scales and comparisons

How big is 21844?
  • 21,844 seconds is equal to 6 hours, 4 minutes, 4 seconds.
  • To count from 1 to 21,844 would take you about six 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 21844 cubic inches would be around 2.3 feet tall.

Recreational maths with 21844

  • 21844 backwards is 44812
  • The number of decimal digits it has is: 5
  • The sum of 21844's digits is 19
  • More coming soon!

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"Number 21844 - Facts about the integer". Numbermatics.com. 2024. Web. 4 March 2024.

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Numbermatics. (2024). Number 21844 - Facts about the integer. Retrieved 4 March 2024, from https://numbermatics.com/n/21844/

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Numbermatics. 2024. "Number 21844 - Facts about the integer". https://numbermatics.com/n/21844/

The information we have on file for 21844 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!

Keywords: Divisors of 21844, math, Factors of 21844, curriculum, school, college, exams, university, Prime factorization of 21844, STEM, science, technology, engineering, physics, economics, calculator, twenty-one thousand, eight hundred forty-four.

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