72345728
72,345,728 is an even composite number composed of four prime numbers multiplied together.
72345728 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixty-four divisors.
Prime factorization of 72345728:
27 × 7 × 13 × 6211
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 7 × 13 × 6211)See below for interesting mathematical facts about the number 72345728 from the Numbermatics database.
Names of 72345728
- Cardinal: 72345728 can be written as Seventy-two million, three hundred forty-five thousand, seven hundred twenty-eight.
Scientific notation
- Scientific notation: 7.2345728 × 107
Factors of 72345728
Divisors of 72345728
- Number of divisors d(n): 64
-
Complete list of divisors:
1 2 4 7 8 13 14 16 26 28 32 52 56 64 91 104 112 128 182 208 224 364 416 448 728 832 896 1456 1664 2912 5824 6211 11648 12422 24844 43477 49688 80743 86954 99376 161486 173908 198752 322972 347816 397504 565201 645944 695632 795008 1130402 1291888 1391264 2260804 2583776 2782528 4521608 5167552 5565056 9043216 10335104 18086432 36172864 72345728
- Sum of all divisors σ(n): 177414720
- Sum of proper divisors (its aliquot sum) s(n): 105068992
- 72345728 is an abundant number, because the sum of its proper divisors (105068992) is greater than itself. Its abundance is 32723264
Bases of 72345728
- Binary: 1000100111111101000100000002
- Hexadecimal: 0x44FE880
- Base-36: 172MBK
Squares and roots of 72345728
- 72345728 squared (723457282) is 5233904359849984
- 72345728 cubed (723457283) is 378650621195721063268352
-
The
square root of 72345728 is 8505.6291948331 -
The
cube root of 72345728 is 416.6815750043
Scales and comparisons
How big is 72345728?- 72,345,728 seconds is equal to 2 years, 15 weeks, 4 days, 8 hours, 2 minutes, 8 seconds.
-
To count from 1 to 72,345,728 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 72345728 cubic inches would be around 34.7 feet tall.
Recreational maths with 72345728
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The information we have on file for 72345728 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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