21328866
21,328,866 is an even composite number composed of five prime numbers multiplied together.
21328866 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of sixty-four divisors.
Prime factorization of 21328866:
2 × 33 × 13 × 23 × 1321
(2 × 3 × 3 × 3 × 13 × 23 × 1321)See below for interesting mathematical facts about the number 21328866 from the Numbermatics database.
Names of 21328866
- Cardinal: 21328866 can be written as Twenty-one million, three hundred twenty-eight thousand, eight hundred sixty-six.
Scientific notation
- Scientific notation: 2.1328866 × 107
Factors of 21328866
Divisors of 21328866
- Number of divisors d(n): 64
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Complete list of divisors:
1 2 3 6 9 13 18 23 26 27 39 46 54 69 78 117 138 207 234 299 351 414 598 621 702 897 1242 1321 1794 2642 2691 3963 5382 7926 8073 11889 16146 17173 23778 30383 34346 35667 51519 60766 71334 91149 103038 154557 182298 273447 309114 394979 463671 546894 789958 820341 927342 1184937 1640682 2369874 3554811 7109622 10664433 21328866
- Sum of all divisors σ(n): 53303040
- Sum of proper divisors (its aliquot sum) s(n): 31974174
- 21328866 is an abundant number, because the sum of its proper divisors (31974174) is greater than itself. Its abundance is 10645308
Bases of 21328866
- Binary: 10100010101110011111000102
- Hexadecimal: 0x14573E2
- Base-36: CP5GI
Squares and roots of 21328866
- 21328866 squared (213288662) is 454920524845956
- 21328866 cubed (213288663) is 9702938915089066165896
-
The
square root of 21328866 is 4618.3185251777 -
The
cube root of 21328866 is 277.3251491643
Scales and comparisons
How big is 21328866?- 21,328,866 seconds is equal to 35 weeks, 1 day, 20 hours, 41 minutes, 6 seconds.
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To count from 1 to 21,328,866 would take you about six days!
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 21328866 cubic inches would be around 23.1 feet tall.
Recreational maths with 21328866
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The information we have on file for 21328866 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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