21198720
21,198,720 is an even composite number composed of five prime numbers multiplied together.
21198720 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 21198720:
27 × 3 × 5 × 61 × 181
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 61 × 181)See below for interesting mathematical facts about the number 21198720 from the Numbermatics database.
Names of 21198720
- Cardinal: 21198720 can be written as Twenty-one million, one hundred ninety-eight thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 2.119872 × 107
Factors of 21198720
Divisors of 21198720
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 61 64 80 96 120 122 128 160 181 183 192 240 244 305 320 362 366 384 480 488 543 610 640 724 732 905 915 960 976 1086 1220 1448 1464 1810 1830 1920 1952 2172 2440 2715 2896 2928 3620 3660 3904 4344 4880 5430 5792 5856 7240 7320 7808 8688 9760 10860 11041 11584 11712 14480 14640 17376 19520 21720 22082 23168 23424 28960 29280 33123 34752 39040 43440 44164 55205 57920 58560 66246 69504 86880 88328 110410 115840 117120 132492 165615 173760 176656 220820 264984 331230 347520 353312 441640 529968 662460 706624 883280 1059936 1324920 1413248 1766560 2119872 2649840 3533120 4239744 5299680 7066240 10599360 21198720
- Sum of all divisors σ(n): 69058080
- Sum of proper divisors (its aliquot sum) s(n): 47859360
- 21198720 is an abundant number, because the sum of its proper divisors (47859360) is greater than itself. Its abundance is 26660640
Bases of 21198720
- Binary: 10100001101110111100000002
- Hexadecimal: 0x1437780
- Base-36: CMD1C
Squares and roots of 21198720
- 21198720 squared (211987202) is 449385729638400
- 21198720 cubed (211987203) is 9526402254600142848000
-
The
square root of 21198720 is 4604.2067720727 -
The
cube root of 21198720 is 276.7599304933
Scales and comparisons
How big is 21198720?- 21,198,720 seconds is equal to 35 weeks, 8 hours, 32 minutes.
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To count from 1 to 21,198,720 would take you about four 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 21198720 cubic inches would be around 23.1 feet tall.
Recreational maths with 21198720
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Numbermatics. (2024). Number 21198720 - Facts about the integer. Retrieved 29 April 2024, from https://numbermatics.com/n/21198720/
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The information we have on file for 21198720 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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