21042756
21,042,756 is an even composite number composed of five prime numbers multiplied together.
21042756 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred eight divisors.
Prime factorization of 21042756:
22 × 32 × 72 × 79 × 151
(2 × 2 × 3 × 3 × 7 × 7 × 79 × 151)See below for interesting mathematical facts about the number 21042756 from the Numbermatics database.
Names of 21042756
- Cardinal: 21042756 can be written as Twenty-one million, forty-two thousand, seven hundred fifty-six.
Scientific notation
- Scientific notation: 2.1042756 × 107
Factors of 21042756
Divisors of 21042756
- Number of divisors d(n): 108
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Complete list of divisors:
1 2 3 4 6 7 9 12 14 18 21 28 36 42 49 63 79 84 98 126 147 151 158 196 237 252 294 302 316 441 453 474 553 588 604 711 882 906 948 1057 1106 1359 1422 1659 1764 1812 2114 2212 2718 2844 3171 3318 3871 4228 4977 5436 6342 6636 7399 7742 9513 9954 11613 11929 12684 14798 15484 19026 19908 22197 23226 23858 29596 34839 35787 38052 44394 46452 47716 66591 69678 71574 83503 88788 107361 133182 139356 143148 167006 214722 250509 266364 334012 429444 501018 584521 751527 1002036 1169042 1503054 1753563 2338084 3006108 3507126 5260689 7014252 10521378 21042756
- Sum of all divisors σ(n): 63073920
- Sum of proper divisors (its aliquot sum) s(n): 42031164
- 21042756 is an abundant number, because the sum of its proper divisors (42031164) is greater than itself. Its abundance is 20988408
Bases of 21042756
- Binary: 10100000100010110010001002
- Hexadecimal: 0x1411644
- Base-36: CJ0P0
Squares and roots of 21042756
- 21042756 squared (210427562) is 442797580075536
- 21042756 cubed (210427563) is 9317681434919965617216
-
The
square root of 21042756 is 4587.2383849109 -
The
cube root of 21042756 is 276.0795296963
Scales and comparisons
How big is 21042756?- 21,042,756 seconds is equal to 34 weeks, 5 days, 13 hours, 12 minutes, 36 seconds.
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To count from 1 to 21,042,756 would take you about seven 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 21042756 cubic inches would be around 23 feet tall.
Recreational maths with 21042756
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The information we have on file for 21042756 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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