72729138

72,729,138 is an even composite number composed of four prime numbers multiplied together.

What does the number 72729138 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 16 divisors.

72729138 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixteen divisors.

Prime factorization of 72729138:

2 × 3 × 79 × 153437

See below for interesting mathematical facts about the number 72729138 from the Numbermatics database.

Names of 72729138

Cardinal: 72729138 can be written as Seventy-two million, seven hundred twenty-nine thousand, one hundred thirty-eight.

Scientific notation

Scientific notation: 7.2729138 × 10⁷

Factors of 72729138

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 4
Sum of prime factors: 153521

Divisors of 72729138

Number of divisors d(n): 16
Complete list of divisors:
1 2 3 6 79 158 237 474 153437 306874 460311 920622 12121523 24243046 36364569 72729138
Sum of all divisors σ(n): 147300480
Sum of proper divisors (its aliquot sum) s(n): 74571342
72729138 is an abundant number, because the sum of its proper divisors (74571342) is greater than itself. Its abundance is 1842204

Bases of 72729138

Binary: 100010101011100001000110010₂
Hexadecimal: 0x455C232
Base-36: 17AU5U

Squares and roots of 72729138

72729138 squared (72729138²) is 5289527514223044
72729138 cubed (72729138³) is 384702776536724729856072
The square root of 72729138 is 8528.1380148309
The cube root of 72729138 is 417.4163729857

Scales and comparisons

How big is 72729138?

72,729,138 seconds is equal to 2 years, 16 weeks, 1 day, 18 hours, 32 minutes, 18 seconds.
To count from 1 to 72,729,138 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 72729138 cubic inches would be around 34.8 feet tall.

Recreational maths with 72729138

72729138 backwards is 83192727
The number of decimal digits it has is: 8
The sum of 72729138's digits is 39
More coming soon!

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The information we have on file for 72729138 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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