21321117720
21,321,117,720 is an even composite number composed of seven prime numbers multiplied together.
21321117720 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of three hundred eighty-four divisors.
Prime factorization of 21321117720:
23 × 32 × 5 × 7 × 53 × 61 × 2617
(2 × 2 × 2 × 3 × 3 × 5 × 7 × 53 × 61 × 2617)See below for interesting mathematical facts about the number 21321117720 from the Numbermatics database.
Names of 21321117720
- Cardinal: 21321117720 can be written as Twenty-one billion, three hundred twenty-one million, one hundred seventeen thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 2.132111772 × 1010
Factors of 21321117720
Divisors of 21321117720
- Number of divisors d(n): 384
-
Complete list of divisors:
1 2 3 4 5 6 7 8 9 10 12 14 15 18 20 21 24 28 30 35 36 40 42 45 53 56 60 61 63 70 72 84 90 105 106 120 122 126 140 159 168 180 183 210 212 244 252 265 280 305 315 318 360 366 371 420 424 427 477 488 504 530 549 610 630 636 732 742 795 840 854 915 954 1060 1098 1113 1220 1260 1272 1281 1464 1484 1590 1708 1830 1855 1908 2120 2135 2196 2226 2385 2440 2520 2562 2617 2745 2968 3180 3233 3339 3416 3660 3710 3816 3843 4270 4392 4452 4770 5124 5234 5490 5565 6360 6405 6466 6678 7320 7420 7686 7851 8540 8904 9540 9699 10248 10468 10980 11130 12810 12932 13085 13356 14840 15372 15702 16165 16695 17080 18319 19080 19215 19398 20936 21960 22260 22631 23553 25620 25864 26170 26712 29097 30744 31404 32330 33390 36638 38430 38796 39255 44520 45262 47106 48495 51240 52340 54957 58194 62808 64660 66780 67893 73276 76860 77592 78510 90524 91595 94212 96990 104680 109914 113155 116388 117765 129320 133560 135786 138701 145485 146552 153720 157020 159637 164871 181048 183190 188424 193980 203679 219828 226310 232776 235530 271572 274785 277402 290970 314040 319274 329742 339465 366380 387960 407358 416103 439656 452620 471060 478911 543144 549570 554804 581940 638548 659484 678930 693505 732760 798185 814716 824355 832206 905240 942120 957822 970907 1018395 1099140 1109608 1117459 1163880 1248309 1277096 1318968 1357860 1387010 1436733 1596370 1629432 1648710 1664412 1915644 1941814 2036790 2080515 2198280 2234918 2394555 2496618 2715720 2774020 2873466 2912721 3192740 3297420 3328824 3352377 3831288 3883628 4073580 4161030 4469836 4789110 4854535 4993236 5548040 5587295 5746932 5825442 6241545 6385480 6594840 6704754 7183665 7767256 8147160 8322060 8460761 8738163 8939672 9578220 9709070 9986472 10057131 11174590 11493864 11650884 12483090 13409508 14367330 14563605 16644120 16761885 16921522 17476326 19156440 19418140 20114262 22349180 23301768 24966180 25382283 26819016 28734660 29127210 33523770 33843044 34952652 38836280 40228524 42303805 43690815 44698360 49932360 50285655 50764566 57469320 58254420 59225327 67047540 67686088 69905304 76146849 80457048 84607610 87381630 100571310 101529132 116508840 118450654 126911415 134095080 152293698 169215220 174763260 177675981 201142620 203058264 236901308 253822830 296126635 304587396 338430440 349526520 355351962 380734245 402285240 473802616 507645660 533027943 592253270 609174792 710703924 761468490 888379905 1015291320 1066055886 1184506540 1421407848 1522936980 1776759810 2132111772 2369013080 2665139715 3045873960 3553519620 4264223544 5330279430 7107039240 10660558860 21321117720
- Sum of all divisors σ(n): 82040999040
- Sum of proper divisors (its aliquot sum) s(n): 60719881320
- 21321117720 is an abundant number, because the sum of its proper divisors (60719881320) is greater than itself. Its abundance is 39398763600
Bases of 21321117720
- Binary: 100111101101101011001110000000110002
- Hexadecimal: 0x4F6D67018
- Base-36: 9SM1JQ0
Squares and roots of 21321117720
- 21321117720 squared (213211177202) is 454590060830097998400
- 21321117720 cubed (213211177203) is 9692368201300480343022771648000
-
The
square root of 21321117720 is 146017.5253865095 -
The
cube root of 21321117720 is 2772.9156317543
Scales and comparisons
How big is 21321117720?- 21,321,117,720 seconds is equal to 677 years, 49 weeks, 1 day, 4 hours, 42 minutes.
-
To count from 1 to 21,321,117,720 would take you about one thousand, three hundred fifty-five years!
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 21321117720 cubic inches would be around 231.1 feet tall.
Recreational maths with 21321117720
- 21321117720 backwards is 02771112312
- The number of decimal digits it has is: 11
- The sum of 21321117720's digits is 27
- More coming soon!
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