20981220
20,981,220 is an even composite number composed of six prime numbers multiplied together.
20981220 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 20981220:
22 × 3 × 5 × 13 × 37 × 727
(2 × 2 × 3 × 5 × 13 × 37 × 727)See below for interesting mathematical facts about the number 20981220 from the Numbermatics database.
Names of 20981220
- Cardinal: 20981220 can be written as Twenty million, nine hundred eighty-one thousand, two hundred twenty.
Scientific notation
- Scientific notation: 2.098122 × 107
Factors of 20981220
Divisors of 20981220
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 3 4 5 6 10 12 13 15 20 26 30 37 39 52 60 65 74 78 111 130 148 156 185 195 222 260 370 390 444 481 555 727 740 780 962 1110 1443 1454 1924 2181 2220 2405 2886 2908 3635 4362 4810 5772 7215 7270 8724 9451 9620 10905 14430 14540 18902 21810 26899 28353 28860 37804 43620 47255 53798 56706 80697 94510 107596 113412 134495 141765 161394 189020 268990 283530 322788 349687 403485 537980 567060 699374 806970 1049061 1398748 1613940 1748435 2098122 3496870 4196244 5245305 6993740 10490610 20981220
- Sum of all divisors σ(n): 65065728
- Sum of proper divisors (its aliquot sum) s(n): 44084508
- 20981220 is an abundant number, because the sum of its proper divisors (44084508) is greater than itself. Its abundance is 23103288
Bases of 20981220
- Binary: 10100000000100101111001002
- Hexadecimal: 0x14025E4
- Base-36: CHP7O
Squares and roots of 20981220
- 20981220 squared (209812202) is 440211592688400
- 20981220 cubed (209812203) is 9236176272745711848000
-
The
square root of 20981220 is 4580.5261706491 -
The
cube root of 20981220 is 275.8101508939
Scales and comparisons
How big is 20981220?- 20,981,220 seconds is equal to 34 weeks, 4 days, 20 hours, 7 minutes.
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To count from 1 to 20,981,220 would take you about six 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 20981220 cubic inches would be around 23 feet tall.
Recreational maths with 20981220
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The information we have on file for 20981220 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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