728728
728,728 is an even composite number composed of four prime numbers multiplied together.
728728 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 728728:
23 × 72 × 11 × 132
(2 × 2 × 2 × 7 × 7 × 11 × 13 × 13)See below for interesting mathematical facts about the number 728728 from the Numbermatics database.
Names of 728728
- Cardinal: 728728 can be written as Seven hundred twenty-eight thousand, seven hundred twenty-eight.
Scientific notation
- Scientific notation: 7.28728 × 105
Factors of 728728
Divisors of 728728
- Number of divisors d(n): 72
-
Complete list of divisors:
1 2 4 7 8 11 13 14 22 26 28 44 49 52 56 77 88 91 98 104 143 154 169 182 196 286 308 338 364 392 539 572 616 637 676 728 1001 1078 1144 1183 1274 1352 1859 2002 2156 2366 2548 3718 4004 4312 4732 5096 7007 7436 8008 8281 9464 13013 14014 14872 16562 26026 28028 33124 52052 56056 66248 91091 104104 182182 364364 728728
- Sum of all divisors σ(n): 1877580
- Sum of proper divisors (its aliquot sum) s(n): 1148852
- 728728 is an abundant number, because the sum of its proper divisors (1148852) is greater than itself. Its abundance is 420124
Bases of 728728
- Binary: 101100011110100110002
- Hexadecimal: 0xB1E98
- Base-36: FMAG
Squares and roots of 728728
- 728728 squared (7287282) is 531044497984
- 728728 cubed (7287283) is 386986994926884352
-
The
square root of 728728 is 853.6556682879 -
The
cube root of 728728 is 89.9888051921
Scales and comparisons
How big is 728728?- 728,728 seconds is equal to 1 week, 1 day, 10 hours, 25 minutes, 28 seconds.
-
To count from 1 to 728,728 would take you about ten hours!
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 728728 cubic inches would be around 7.5 feet tall.
Recreational maths with 728728
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The information we have on file for 728728 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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