72871981

72,871,981 is an odd composite number composed of five prime numbers multiplied together.

What does the number 72871981 look like?

This visualization shows the relationship between its 5 prime factors (large circles) and 32 divisors.

72871981 is an odd composite number. It is composed of five distinct prime numbers multiplied together. It has a total of thirty-two divisors.

Prime factorization of 72871981:

7 × 13 × 23 × 37 × 941

See below for interesting mathematical facts about the number 72871981 from the Numbermatics database.

Names of 72871981

Cardinal: 72871981 can be written as Seventy-two million, eight hundred seventy-one thousand, nine hundred eighty-one.

Scientific notation

Scientific notation: 7.2871981 × 10⁷

Factors of 72871981

Number of distinct prime factors ω(n): 5
Total number of prime factors Ω(n): 5
Sum of prime factors: 1021

Divisors of 72871981

Number of divisors d(n): 32
Complete list of divisors:
1 7 13 23 37 91 161 259 299 481 851 941 2093 3367 5957 6587 11063 12233 21643 34817 77441 85631 151501 243719 281359 452621 800791 1969513 3168347 5605537 10410283 72871981
Sum of all divisors σ(n): 96219648
Sum of proper divisors (its aliquot sum) s(n): 23347667
72871981 is a deficient number, because the sum of its proper divisors (23347667) is less than itself. Its deficiency is 49524314

Bases of 72871981

Binary: 100010101111111000000101101₂
Hexadecimal: 0x457F02D
Base-36: 17DWDP

Squares and roots of 72871981

72871981 squared (72871981²) is 5310325614864361
72871981 cubed (72871981³) is 386973947310209032369141
The square root of 72871981 is 8536.5087125827
The cube root of 72871981 is 417.6894685465

Scales and comparisons

How big is 72871981?

72,871,981 seconds is equal to 2 years, 16 weeks, 3 days, 10 hours, 13 minutes, 1 second.
To count from 1 to 72,871,981 would take you about three 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 72871981 cubic inches would be around 34.8 feet tall.

Recreational maths with 72871981

72871981 backwards is 18917827
The number of decimal digits it has is: 8
The sum of 72871981's digits is 43
More coming soon!

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The information we have on file for 72871981 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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