1221377920

1,221,377,920 is an even composite number composed of six prime numbers multiplied together.

What does the number 1221377920 look like?

This visualization shows the relationship between its 6 prime factors (large circles) and 384 divisors.

1221377920 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of three hundred eighty-four divisors.

Prime factorization of 1221377920:

27 × 5 × 72 × 17 × 29 × 79

(2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 7 × 7 × 17 × 29 × 79)

See below for interesting mathematical facts about the number 1221377920 from the Numbermatics database.


Names of 1221377920

  • Cardinal: 1221377920 can be written as One billion, two hundred twenty-one million, three hundred seventy-seven thousand, nine hundred twenty.

Scientific notation

  • Scientific notation: 1.22137792 × 109

Factors of 1221377920

  • Number of distinct prime factors ω(n): 6
  • Total number of prime factors Ω(n): 13
  • Sum of prime factors: 139

Divisors of 1221377920

Bases of 1221377920

  • Binary: 10010001100110010111111100000002
  • Hexadecimal: 0x48CCBF80
  • Base-36: K76D8G

Squares and roots of 1221377920

  • 1221377920 squared (12213779202) is 1491764023463526400
  • 1221377920 cubed (12213779203) is 1822007640108713070297088000
  • The square root of 1221377920 is 34948.2176941829
  • The cube root of 1221377920 is 1068.9318597997

Scales and comparisons

How big is 1221377920?
  • 1,221,377,920 seconds is equal to 38 years, 43 weeks, 3 days, 7 hours, 38 minutes, 40 seconds.
  • To count from 1 to 1,221,377,920 would take you about seventy-seven years!

    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 1221377920 cubic inches would be around 89.1 feet tall.

Recreational maths with 1221377920

  • 1221377920 backwards is 0297731221
  • 1221377920 is a Harshad number.
  • The number of decimal digits it has is: 10
  • The sum of 1221377920's digits is 34
  • More coming soon!

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"Number 1221377920 - Facts about the integer". Numbermatics.com. 2024. Web. 28 March 2024.

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Numbermatics. (2024). Number 1221377920 - Facts about the integer. Retrieved 28 March 2024, from https://numbermatics.com/n/1221377920/

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The information we have on file for 1221377920 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!

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