138720

138,720 is an even composite number composed of four prime numbers multiplied together.

What does the number 138720 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 72 divisors.

138720 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of seventy-two divisors.

Prime factorization of 138720:

25 × 3 × 5 × 172

(2 × 2 × 2 × 2 × 2 × 3 × 5 × 17 × 17)

See below for interesting mathematical facts about the number 138720 from the Numbermatics database.


Names of 138720

  • Cardinal: 138720 can be written as One hundred thirty-eight thousand, seven hundred twenty.

Scientific notation

  • Scientific notation: 1.3872 × 105

Factors of 138720

  • Number of distinct prime factors ω(n): 4
  • Total number of prime factors Ω(n): 9
  • Sum of prime factors: 27

Divisors of 138720

Bases of 138720

  • Binary: 1000011101111000002
  • Hexadecimal: 0x21DE0
  • Base-36: 2Z1C

Squares and roots of 138720

  • 138720 squared (1387202) is 19243238400
  • 138720 cubed (1387203) is 2669422030848000
  • The square root of 138720 is 372.4513391035
  • The cube root of 138720 is 51.7662088367

Scales and comparisons

How big is 138720?
  • 138,720 seconds is equal to 1 day, 14 hours, 32 minutes.
  • To count from 1 to 138,720 would take you about fourteen 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 138720 cubic inches would be around 4.3 feet tall.

Recreational maths with 138720

  • 138720 backwards is 027831
  • The number of decimal digits it has is: 6
  • The sum of 138720's digits is 21
  • More coming soon!

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"Number 138720 - Facts about the integer". Numbermatics.com. 2024. Web. 26 February 2024.

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Numbermatics. (2024). Number 138720 - Facts about the integer. Retrieved 26 February 2024, from https://numbermatics.com/n/138720/

Chicago style:
Numbermatics. 2024. "Number 138720 - Facts about the integer". https://numbermatics.com/n/138720/

The information we have on file for 138720 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 138720, math, Factors of 138720, curriculum, school, college, exams, university, Prime factorization of 138720, STEM, science, technology, engineering, physics, economics, calculator, one hundred thirty-eight thousand, seven hundred twenty.

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