20640

20,640 is an even composite number composed of four prime numbers multiplied together.

What does the number 20640 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 48 divisors.

20640 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of forty-eight divisors.

Prime factorization of 20640:

25 × 3 × 5 × 43

(2 × 2 × 2 × 2 × 2 × 3 × 5 × 43)

See below for interesting mathematical facts about the number 20640 from the Numbermatics database.


Names of 20640

  • Cardinal: 20640 can be written as Twenty thousand, six hundred forty.

Scientific notation

  • Scientific notation: 2.064 × 104

Factors of 20640

  • Number of distinct prime factors ω(n): 4
  • Total number of prime factors Ω(n): 8
  • Sum of prime factors: 53

Divisors of 20640

Bases of 20640

  • Binary: 1010000101000002
  • Hexadecimal: 0x50A0
  • Base-36: FXC

Squares and roots of 20640

  • 20640 squared (206402) is 426009600
  • 20640 cubed (206403) is 8792838144000
  • The square root of 20640 is 143.6662799685
  • The cube root of 20640 is 27.4306794015

Scales and comparisons

How big is 20640?
  • 20,640 seconds is equal to 5 hours, 44 minutes.
  • To count from 1 to 20,640 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 20640 cubic inches would be around 2.3 feet tall.

Recreational maths with 20640

  • 20640 backwards is 04602
  • 20640 is a Harshad number.
  • The number of decimal digits it has is: 5
  • The sum of 20640's digits is 12
  • More coming soon!

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"Number 20640 - Facts about the integer". Numbermatics.com. 2024. Web. 13 July 2024.

APA style:
Numbermatics. (2024). Number 20640 - Facts about the integer. Retrieved 13 July 2024, from https://numbermatics.com/n/20640/

Chicago style:
Numbermatics. 2024. "Number 20640 - Facts about the integer". https://numbermatics.com/n/20640/

The information we have on file for 20640 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 20640, math, Factors of 20640, curriculum, school, college, exams, university, Prime factorization of 20640, STEM, science, technology, engineering, physics, economics, calculator, twenty thousand, six hundred forty.

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