21072870
21,072,870 is an even composite number composed of seven prime numbers multiplied together.
21072870 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of one hundred ninety-two divisors.
Prime factorization of 21072870:
2 × 32 × 5 × 7 × 13 × 31 × 83
(2 × 3 × 3 × 5 × 7 × 13 × 31 × 83)See below for interesting mathematical facts about the number 21072870 from the Numbermatics database.
Names of 21072870
- Cardinal: 21072870 can be written as Twenty-one million, seventy-two thousand, eight hundred seventy.
Scientific notation
- Scientific notation: 2.107287 × 107
Factors of 21072870
Divisors of 21072870
- Number of divisors d(n): 192
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Complete list of divisors:
1 2 3 5 6 7 9 10 13 14 15 18 21 26 30 31 35 39 42 45 62 63 65 70 78 83 90 91 93 105 117 126 130 155 166 182 186 195 210 217 234 249 273 279 310 315 390 403 415 434 455 465 498 546 558 581 585 630 651 747 806 819 830 910 930 1079 1085 1162 1170 1209 1245 1302 1365 1395 1494 1638 1743 1953 2015 2158 2170 2418 2490 2573 2730 2790 2821 2905 3237 3255 3486 3627 3735 3906 4030 4095 5146 5229 5395 5642 5810 6045 6474 6510 7254 7470 7553 7719 8190 8463 8715 9711 9765 10458 10790 12090 12865 14105 15106 15438 16185 16926 17430 18011 18135 19422 19530 22659 23157 25389 25730 26145 28210 32370 33449 36022 36270 37765 38595 42315 45318 46314 48555 50778 52290 54033 66898 67977 75530 77190 84630 90055 97110 100347 108066 113295 115785 126945 135954 162099 167245 180110 200694 226590 231570 234143 253890 270165 301041 324198 334490 339885 468286 501735 540330 602082 679770 702429 810495 1003470 1170715 1404858 1505205 1620990 2107287 2341430 3010410 3512145 4214574 7024290 10536435 21072870
- Sum of all divisors σ(n): 70447104
- Sum of proper divisors (its aliquot sum) s(n): 49374234
- 21072870 is an abundant number, because the sum of its proper divisors (49374234) is greater than itself. Its abundance is 28301364
Bases of 21072870
- Binary: 10100000110001011111001102
- Hexadecimal: 0x1418BE6
- Base-36: CJNXI
Squares and roots of 21072870
- 21072870 squared (210728702) is 444065850036900
- 21072870 cubed (210728703) is 9357741929267088903000
-
The
square root of 21072870 is 4590.5195784355 -
The
cube root of 21072870 is 276.2111648007
Scales and comparisons
How big is 21072870?- 21,072,870 seconds is equal to 34 weeks, 5 days, 21 hours, 34 minutes, 30 seconds.
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To count from 1 to 21,072,870 would take you about twenty 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 21072870 cubic inches would be around 23 feet tall.
Recreational maths with 21072870
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The information we have on file for 21072870 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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