21263940
21,263,940 is an even composite number composed of five prime numbers multiplied together.
21263940 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 21263940:
22 × 32 × 5 × 17 × 6949
(2 × 2 × 3 × 3 × 5 × 17 × 6949)See below for interesting mathematical facts about the number 21263940 from the Numbermatics database.
Names of 21263940
- Cardinal: 21263940 can be written as Twenty-one million, two hundred sixty-three thousand, nine hundred forty.
Scientific notation
- Scientific notation: 2.126394 × 107
Factors of 21263940
Divisors of 21263940
- Number of divisors d(n): 72
-
Complete list of divisors:
1 2 3 4 5 6 9 10 12 15 17 18 20 30 34 36 45 51 60 68 85 90 102 153 170 180 204 255 306 340 510 612 765 1020 1530 3060 6949 13898 20847 27796 34745 41694 62541 69490 83388 104235 118133 125082 138980 208470 236266 250164 312705 354399 416940 472532 590665 625410 708798 1063197 1181330 1250820 1417596 1771995 2126394 2362660 3543990 4252788 5315985 7087980 10631970 21263940
- Sum of all divisors σ(n): 68304600
- Sum of proper divisors (its aliquot sum) s(n): 47040660
- 21263940 is an abundant number, because the sum of its proper divisors (47040660) is greater than itself. Its abundance is 25776720
Bases of 21263940
- Binary: 10100010001110110010001002
- Hexadecimal: 0x1447644
- Base-36: CNRD0
Squares and roots of 21263940
- 21263940 squared (212639402) is 452155144323600
- 21263940 cubed (212639403) is 9614599859588370984000
-
The
square root of 21263940 is 4611.2839860499 -
The
cube root of 21263940 is 277.0434665289
Scales and comparisons
How big is 21263940?- 21,263,940 seconds is equal to 35 weeks, 1 day, 2 hours, 39 minutes.
-
To count from 1 to 21,263,940 would take you about five 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 21263940 cubic inches would be around 23.1 feet tall.
Recreational maths with 21263940
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The information we have on file for 21263940 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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