128720

128,720 is an even composite number composed of three prime numbers multiplied together.

What does the number 128720 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 20 divisors.

128720 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twenty divisors.

Prime factorization of 128720:

24 × 5 × 1609

(2 × 2 × 2 × 2 × 5 × 1609)

See below for interesting mathematical facts about the number 128720 from the Numbermatics database.


Names of 128720

  • Cardinal: 128720 can be written as One hundred twenty-eight thousand, seven hundred twenty.

Scientific notation

  • Scientific notation: 1.2872 × 105

Factors of 128720

  • Number of distinct prime factors ω(n): 3
  • Total number of prime factors Ω(n): 6
  • Sum of prime factors: 1616

Divisors of 128720

Bases of 128720

  • Binary: 111110110110100002
  • Hexadecimal: 0x1F6D0
  • Base-36: 2RBK

Squares and roots of 128720

  • 128720 squared (1287202) is 16568838400
  • 128720 cubed (1287203) is 2132740878848000
  • The square root of 128720 is 358.7756959439
  • The cube root of 128720 is 50.4911594497

Scales and comparisons

How big is 128720?
  • 128,720 seconds is equal to 1 day, 11 hours, 45 minutes, 20 seconds.
  • To count from 1 to 128,720 would take you about eleven 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 128720 cubic inches would be around 4.2 feet tall.

Recreational maths with 128720

  • 128720 backwards is 027821
  • 128720 is a Harshad number.
  • The number of decimal digits it has is: 6
  • The sum of 128720's digits is 20
  • More coming soon!

Copy this link to share with anyone:


Share this page on social media:

Link to this page

HTML: To link to this page, just copy and paste the link below into your blog, web page or email.

BBCODE: To link to this page in a forum post or comment box, just copy and paste the link code below:

Cite this page

MLA style:
"Number 128720 - Facts about the integer". Numbermatics.com. 2024. Web. 28 March 2024.

APA style:
Numbermatics. (2024). Number 128720 - Facts about the integer. Retrieved 28 March 2024, from https://numbermatics.com/n/128720/

Chicago style:
Numbermatics. 2024. "Number 128720 - Facts about the integer". https://numbermatics.com/n/128720/

The information we have on file for 128720 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 128720, math, Factors of 128720, curriculum, school, college, exams, university, Prime factorization of 128720, STEM, science, technology, engineering, physics, economics, calculator, one hundred twenty-eight thousand, seven hundred twenty.

Oh no. Javascript is switched off in your browser.
Some bits of this website may not work unless you switch it on.