21118

21,118 is an even composite number composed of two prime numbers multiplied together.

What does the number 21118 look like?

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

21118 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

Prime factorization of 21118:

2 × 10559

See below for interesting mathematical facts about the number 21118 from the Numbermatics database.


Names of 21118

  • Cardinal: 21118 can be written as Twenty-one thousand, one hundred eighteen.

Scientific notation

  • Scientific notation: 2.1118 × 104

Factors of 21118

  • Number of distinct prime factors ω(n): 2
  • Total number of prime factors Ω(n): 2
  • Sum of prime factors: 10561

Divisors of 21118

  • Number of divisors d(n): 4
  • Complete list of divisors:
  • Sum of all divisors σ(n): 31680
  • Sum of proper divisors (its aliquot sum) s(n): 10562
  • 21118 is a deficient number, because the sum of its proper divisors (10562) is less than itself. Its deficiency is 10556

Bases of 21118

  • Binary: 1010010011111102
  • Hexadecimal: 0x527E
  • Base-36: GAM

Squares and roots of 21118

  • 21118 squared (211182) is 445969924
  • 21118 cubed (211183) is 9417992855032
  • The square root of 21118 is 145.3203358103
  • The cube root of 21118 is 27.6408203643

Scales and comparisons

How big is 21118?
  • 21,118 seconds is equal to 5 hours, 51 minutes, 58 seconds.
  • To count from 1 to 21,118 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 21118 cubic inches would be around 2.3 feet tall.

Recreational maths with 21118

  • 21118 backwards is 81112
  • The number of decimal digits it has is: 5
  • The sum of 21118's digits is 13
  • More coming soon!

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"Number 21118 - Facts about the integer". Numbermatics.com. 2024. Web. 29 March 2024.

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Numbermatics. (2024). Number 21118 - Facts about the integer. Retrieved 29 March 2024, from https://numbermatics.com/n/21118/

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The information we have on file for 21118 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 21118, math, Factors of 21118, curriculum, school, college, exams, university, Prime factorization of 21118, STEM, science, technology, engineering, physics, economics, calculator, twenty-one thousand, one hundred eighteen.

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