21002940
21,002,940 is an even composite number composed of six prime numbers multiplied together.
21002940 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 21002940:
22 × 32 × 5 × 7 × 79 × 211
(2 × 2 × 3 × 3 × 5 × 7 × 79 × 211)See below for interesting mathematical facts about the number 21002940 from the Numbermatics database.
Names of 21002940
- Cardinal: 21002940 can be written as Twenty-one million, two thousand, nine hundred forty.
Scientific notation
- Scientific notation: 2.100294 × 107
Factors of 21002940
Divisors of 21002940
- Number of divisors d(n): 144
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Complete list of divisors:
1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 28 30 35 36 42 45 60 63 70 79 84 90 105 126 140 158 180 210 211 237 252 315 316 395 420 422 474 553 630 633 711 790 844 948 1055 1106 1185 1260 1266 1422 1477 1580 1659 1899 2110 2212 2370 2532 2765 2844 2954 3165 3318 3555 3798 4220 4431 4740 4977 5530 5908 6330 6636 7110 7385 7596 8295 8862 9495 9954 11060 12660 13293 14220 14770 16590 16669 17724 18990 19908 22155 24885 26586 29540 33180 33338 37980 44310 49770 50007 53172 66465 66676 83345 88620 99540 100014 116683 132930 150021 166690 200028 233366 250035 265860 300042 333380 350049 466732 500070 583415 600084 700098 750105 1000140 1050147 1166830 1400196 1500210 1750245 2100294 2333660 3000420 3500490 4200588 5250735 7000980 10501470 21002940
- Sum of all divisors σ(n): 74081280
- Sum of proper divisors (its aliquot sum) s(n): 53078340
- 21002940 is an abundant number, because the sum of its proper divisors (53078340) is greater than itself. Its abundance is 32075400
Bases of 21002940
- Binary: 10100000001111010101111002
- Hexadecimal: 0x1407ABC
- Base-36: CI5Z0
Squares and roots of 21002940
- 21002940 squared (210029402) is 441123488643600
- 21002940 cubed (210029403) is 9264890164572212184000
-
The
square root of 21002940 is 4582.8964640279 -
The
cube root of 21002940 is 275.9052920169
Scales and comparisons
How big is 21002940?- 21,002,940 seconds is equal to 34 weeks, 5 days, 2 hours, 9 minutes.
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To count from 1 to 21,002,940 would take you about fifteen 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 21002940 cubic inches would be around 23 feet tall.
Recreational maths with 21002940
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The information we have on file for 21002940 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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