21,916 is an even composite number composed of two prime numbers multiplied together.

What does the number 21916 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 6 divisors.

21916 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of six divisors.

Prime factorization of 21916:

22 × 5479

(2 × 2 × 5479)

See below for interesting mathematical facts about the number 21916 from the Numbermatics database.

Names of 21916

  • Cardinal: 21916 can be written as Twenty-one thousand, nine hundred sixteen.

Scientific notation

  • Scientific notation: 2.1916 × 104

Factors of 21916

  • Number of distinct prime factors ω(n): 2
  • Total number of prime factors Ω(n): 3
  • Sum of prime factors: 5481

Divisors of 21916

  • Number of divisors d(n): 6
  • Complete list of divisors:
  • Sum of all divisors σ(n): 38360
  • Sum of proper divisors (its aliquot sum) s(n): 16444
  • 21916 is a deficient number, because the sum of its proper divisors (16444) is less than itself. Its deficiency is 5472

Bases of 21916

  • Binary: 1010101100111002
  • Hexadecimal: 0x559C
  • Base-36: GWS

Squares and roots of 21916

  • 21916 squared (219162) is 480311056
  • 21916 cubed (219163) is 10526497103296
  • The square root of 21916 is 148.0405349895
  • The cube root of 21916 is 27.9846855029

Scales and comparisons

How big is 21916?
  • 21,916 seconds is equal to 6 hours, 5 minutes, 16 seconds.
  • To count from 1 to 21,916 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 21916 cubic inches would be around 2.3 feet tall.

Recreational maths with 21916

  • 21916 backwards is 61912
  • The number of decimal digits it has is: 5
  • The sum of 21916's digits is 19
  • More coming soon!

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"Number 21916 - Facts about the integer". Numbermatics.com. 2021. Web. 4 December 2021.

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Numbermatics. (2021). Number 21916 - Facts about the integer. Retrieved 4 December 2021, from https://numbermatics.com/n/21916/

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The information we have on file for 21916 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 21916, math, Factors of 21916, curriculum, school, college, exams, university, Prime factorization of 21916, STEM, science, technology, engineering, physics, economics, calculator, twenty-one thousand, nine hundred sixteen.

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