21964

21,964 is an even composite number composed of three prime numbers multiplied together.

What does the number 21964 look like?

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

21964 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 21964:

22 × 172 × 19

(2 × 2 × 17 × 17 × 19)

See below for interesting mathematical facts about the number 21964 from the Numbermatics database.


Names of 21964

  • Cardinal: 21964 can be written as Twenty-one thousand, nine hundred sixty-four.

Scientific notation

  • Scientific notation: 2.1964 × 104

Factors of 21964

  • Number of distinct prime factors ω(n): 3
  • Total number of prime factors Ω(n): 5
  • Sum of prime factors: 38

Divisors of 21964

  • Number of divisors d(n): 18
  • Complete list of divisors:
  • Sum of all divisors σ(n): 42980
  • Sum of proper divisors (its aliquot sum) s(n): 21016
  • 21964 is a deficient number, because the sum of its proper divisors (21016) is less than itself. Its deficiency is 948

Bases of 21964

  • Binary: 1010101110011002
  • Hexadecimal: 0x55CC
  • Base-36: GY4

Squares and roots of 21964

  • 21964 squared (219642) is 482417296
  • 21964 cubed (219643) is 10595813489344
  • The square root of 21964 is 148.2025640803
  • The cube root of 21964 is 28.0051011115

Scales and comparisons

How big is 21964?
  • 21,964 seconds is equal to 6 hours, 6 minutes, 4 seconds.
  • To count from 1 to 21,964 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 21964 cubic inches would be around 2.3 feet tall.

Recreational maths with 21964

  • 21964 backwards is 46912
  • The number of decimal digits it has is: 5
  • The sum of 21964's digits is 22
  • More coming soon!

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"Number 21964 - Facts about the integer". Numbermatics.com. 2024. Web. 19 March 2024.

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Numbermatics. (2024). Number 21964 - Facts about the integer. Retrieved 19 March 2024, from https://numbermatics.com/n/21964/

Chicago style:
Numbermatics. 2024. "Number 21964 - Facts about the integer". https://numbermatics.com/n/21964/

The information we have on file for 21964 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 21964, math, Factors of 21964, curriculum, school, college, exams, university, Prime factorization of 21964, STEM, science, technology, engineering, physics, economics, calculator, twenty-one thousand, nine hundred sixty-four.

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