81220

81,220 is an even composite number composed of four prime numbers multiplied together.

What does the number 81220 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 24 divisors.

81220 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of twenty-four divisors.

Prime factorization of 81220:

22 × 5 × 31 × 131

(2 × 2 × 5 × 31 × 131)

See below for interesting mathematical facts about the number 81220 from the Numbermatics database.


Names of 81220

  • Cardinal: 81220 can be written as Eighty-one thousand, two hundred twenty.

Scientific notation

  • Scientific notation: 8.122 × 104

Factors of 81220

  • Number of distinct prime factors ω(n): 4
  • Total number of prime factors Ω(n): 5
  • Sum of prime factors: 169

Divisors of 81220

Bases of 81220

  • Binary: 100111101010001002
  • Hexadecimal: 0x13D44
  • Base-36: 1QO4

Squares and roots of 81220

  • 81220 squared (812202) is 6596688400
  • 81220 cubed (812203) is 535783031848000
  • The square root of 81220 is 284.9912279351
  • The cube root of 81220 is 43.3066239087

Scales and comparisons

How big is 81220?
  • 81,220 seconds is equal to 22 hours, 33 minutes, 40 seconds.
  • To count from 1 to 81,220 would take you about twenty-two 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 81220 cubic inches would be around 3.6 feet tall.

Recreational maths with 81220

  • 81220 backwards is 02218
  • The number of decimal digits it has is: 5
  • The sum of 81220's digits is 13
  • More coming soon!

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"Number 81220 - Facts about the integer". Numbermatics.com. 2024. Web. 29 March 2024.

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Numbermatics. (2024). Number 81220 - Facts about the integer. Retrieved 29 March 2024, from https://numbermatics.com/n/81220/

Chicago style:
Numbermatics. 2024. "Number 81220 - Facts about the integer". https://numbermatics.com/n/81220/

The information we have on file for 81220 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 81220, math, Factors of 81220, curriculum, school, college, exams, university, Prime factorization of 81220, STEM, science, technology, engineering, physics, economics, calculator, eighty-one thousand, two hundred twenty.

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