21042560
21,042,560 is an even composite number composed of five prime numbers multiplied together.
21042560 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred ninety-two divisors.
Prime factorization of 21042560:
27 × 5 × 72 × 11 × 61
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 7 × 7 × 11 × 61)See below for interesting mathematical facts about the number 21042560 from the Numbermatics database.
Names of 21042560
- Cardinal: 21042560 can be written as Twenty-one million, forty-two thousand, five hundred sixty.
Scientific notation
- Scientific notation: 2.104256 × 107
Factors of 21042560
Divisors of 21042560
- Number of divisors d(n): 192
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Complete list of divisors:
1 2 4 5 7 8 10 11 14 16 20 22 28 32 35 40 44 49 55 56 61 64 70 77 80 88 98 110 112 122 128 140 154 160 176 196 220 224 244 245 280 305 308 320 352 385 392 427 440 448 488 490 539 560 610 616 640 671 704 770 784 854 880 896 976 980 1078 1120 1220 1232 1342 1408 1540 1568 1708 1760 1952 1960 2135 2156 2240 2440 2464 2684 2695 2989 3080 3136 3355 3416 3520 3904 3920 4270 4312 4480 4697 4880 4928 5368 5390 5978 6160 6272 6710 6832 7040 7808 7840 8540 8624 9394 9760 9856 10736 10780 11956 12320 13420 13664 14945 15680 17080 17248 18788 19520 21472 21560 23485 23912 24640 26840 27328 29890 31360 32879 34160 34496 37576 39040 42944 43120 46970 47824 49280 53680 54656 59780 65758 68320 68992 75152 85888 86240 93940 95648 107360 119560 131516 136640 150304 164395 172480 187880 191296 214720 239120 263032 273280 300608 328790 344960 375760 382592 429440 478240 526064 601216 657580 751520 956480 1052128 1315160 1503040 1912960 2104256 2630320 3006080 4208512 5260640 10521280 21042560
- Sum of all divisors σ(n): 64884240
- Sum of proper divisors (its aliquot sum) s(n): 43841680
- 21042560 is an abundant number, because the sum of its proper divisors (43841680) is greater than itself. Its abundance is 22799120
Bases of 21042560
- Binary: 10100000100010101100000002
- Hexadecimal: 0x1411580
- Base-36: CJ0JK
Squares and roots of 21042560
- 21042560 squared (210425602) is 442789331353600
- 21042560 cubed (210425603) is 9317421072368009216000
-
The
square root of 21042560 is 4587.2170212451 -
The
cube root of 21042560 is 276.0786725247
Scales and comparisons
How big is 21042560?- 21,042,560 seconds is equal to 34 weeks, 5 days, 13 hours, 9 minutes, 20 seconds.
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To count from 1 to 21,042,560 would take you about seven 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 21042560 cubic inches would be around 23 feet tall.
Recreational maths with 21042560
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