72971920

72,971,920 is an even composite number composed of four prime numbers multiplied together.

What does the number 72971920 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 40 divisors.

72971920 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of forty divisors.

Prime factorization of 72971920:

2⁴ × 5 × 7 × 130307

(2 × 2 × 2 × 2 × 5 × 7 × 130307)

See below for interesting mathematical facts about the number 72971920 from the Numbermatics database.

Names of 72971920

Cardinal: 72971920 can be written as Seventy-two million, nine hundred seventy-one thousand, nine hundred twenty.

Scientific notation

Scientific notation: 7.297192 × 10⁷

Factors of 72971920

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 7
Sum of prime factors: 130321

Divisors of 72971920

Number of divisors d(n): 40
Complete list of divisors:
1 2 4 5 7 8 10 14 16 20 28 35 40 56 70 80 112 140 280 560 130307 260614 521228 651535 912149 1042456 1303070 1824298 2084912 2606140 3648596 4560745 5212280 7297192 9121490 10424560 14594384 18242980 36485960 72971920
Sum of all divisors σ(n): 193898304
Sum of proper divisors (its aliquot sum) s(n): 120926384
72971920 is an abundant number, because the sum of its proper divisors (120926384) is greater than itself. Its abundance is 47954464

Bases of 72971920

Binary: 100010110010111011010010000₂
Hexadecimal: 0x4597690
Base-36: 17G1HS

Squares and roots of 72971920

72971920 squared (72971920²) is 5324901108486400
72971920 cubed (72971920³) is 388568257696380901888000
The square root of 72971920 is 8542.3603295577
The cube root of 72971920 is 417.8803256221

Scales and comparisons

How big is 72971920?

72,971,920 seconds is equal to 2 years, 16 weeks, 4 days, 13 hours, 58 minutes, 40 seconds.
To count from 1 to 72,971,920 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 72971920 cubic inches would be around 34.8 feet tall.

Recreational maths with 72971920

72971920 backwards is 02917927
The number of decimal digits it has is: 8
The sum of 72971920's digits is 37
More coming soon!

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The information we have on file for 72971920 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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