21132720
21,132,720 is an even composite number composed of five prime numbers multiplied together.
21132720 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred eighty divisors.
Prime factorization of 21132720:
24 × 32 × 5 × 72 × 599
(2 × 2 × 2 × 2 × 3 × 3 × 5 × 7 × 7 × 599)See below for interesting mathematical facts about the number 21132720 from the Numbermatics database.
Names of 21132720
- Cardinal: 21132720 can be written as Twenty-one million, one hundred thirty-two thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 2.113272 × 107
Factors of 21132720
Divisors of 21132720
- Number of divisors d(n): 180
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Complete list of divisors:
1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 28 30 35 36 40 42 45 48 49 56 60 63 70 72 80 84 90 98 105 112 120 126 140 144 147 168 180 196 210 240 245 252 280 294 315 336 360 392 420 441 490 504 560 588 599 630 720 735 784 840 882 980 1008 1176 1198 1260 1470 1680 1764 1797 1960 2205 2352 2396 2520 2940 2995 3528 3594 3920 4193 4410 4792 5040 5391 5880 5990 7056 7188 8386 8820 8985 9584 10782 11760 11980 12579 14376 16772 17640 17970 20965 21564 23960 25158 26955 28752 29351 33544 35280 35940 37737 41930 43128 47920 50316 53910 58702 62895 67088 71880 75474 83860 86256 88053 100632 107820 117404 125790 143760 146755 150948 167720 176106 188685 201264 215640 234808 251580 264159 293510 301896 335440 352212 377370 431280 440265 469616 503160 528318 587020 603792 704424 754740 880530 1006320 1056636 1174040 1320795 1408848 1509480 1761060 2113272 2348080 2641590 3018960 3522120 4226544 5283180 7044240 10566360 21132720
- Sum of all divisors σ(n): 82695600
- Sum of proper divisors (its aliquot sum) s(n): 61562880
- 21132720 is an abundant number, because the sum of its proper divisors (61562880) is greater than itself. Its abundance is 40430160
Bases of 21132720
- Binary: 10100001001110101101100002
- Hexadecimal: 0x14275B0
- Base-36: CKY40
Squares and roots of 21132720
- 21132720 squared (211327202) is 446591854598400
- 21132720 cubed (211327203) is 9437700617508699648000
-
The
square root of 21132720 is 4597.0338262839 -
The
cube root of 21132720 is 276.4724108561
Scales and comparisons
How big is 21132720?- 21,132,720 seconds is equal to 34 weeks, 6 days, 14 hours, 12 minutes.
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To count from 1 to 21,132,720 would take you about two 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 21132720 cubic inches would be around 23 feet tall.
Recreational maths with 21132720
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The information we have on file for 21132720 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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