21021268128
21,021,268,128 is an even composite number composed of five prime numbers multiplied together.
21021268128 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of four hundred thirty-two divisors.
Prime factorization of 21021268128:
25 × 3 × 73 × 172 × 472
(2 × 2 × 2 × 2 × 2 × 3 × 7 × 7 × 7 × 17 × 17 × 47 × 47)See below for interesting mathematical facts about the number 21021268128 from the Numbermatics database.
Names of 21021268128
- Cardinal: 21021268128 can be written as Twenty-one billion, twenty-one million, two hundred sixty-eight thousand, one hundred twenty-eight.
Scientific notation
- Scientific notation: 2.1021268128 × 1010
Factors of 21021268128
Divisors of 21021268128
- Number of divisors d(n): 432
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Complete list of divisors:
1 2 3 4 6 7 8 12 14 16 17 21 24 28 32 34 42 47 48 49 51 56 68 84 94 96 98 102 112 119 136 141 147 168 188 196 204 224 238 272 282 289 294 329 336 343 357 376 392 408 476 544 564 578 588 658 672 686 714 752 784 799 816 833 867 952 987 1029 1128 1156 1176 1316 1372 1428 1504 1568 1598 1632 1666 1734 1904 1974 2023 2058 2209 2256 2303 2312 2352 2397 2499 2632 2744 2856 3196 3332 3468 3808 3948 4046 4116 4418 4512 4606 4624 4704 4794 4998 5264 5488 5593 5712 5831 6069 6392 6627 6664 6909 6936 7896 8092 8232 8836 9212 9248 9588 9996 10528 10976 11186 11424 11662 12138 12784 13254 13328 13583 13818 13872 14161 15463 15792 16121 16184 16464 16779 17493 17672 18424 19176 19992 22372 23324 24276 25568 26508 26656 27166 27636 27744 28322 30926 31584 32242 32368 32928 33558 34986 35344 36848 37553 38352 39151 39984 40749 42483 44744 46389 46648 48363 48552 53016 54332 55272 56644 61852 64484 64736 67116 69972 70688 73696 75106 76704 78302 79968 81498 84966 89488 92778 93296 95081 96726 97104 99127 106032 108241 108664 110544 112659 113288 117453 123704 128968 134232 139944 150212 156604 162996 169932 178976 185556 186592 190162 193452 194208 198254 212064 216482 217328 221088 225318 226576 234906 247408 257936 262871 268464 274057 279888 285243 297381 300424 313208 324723 325992 339864 371112 380324 386904 396508 432964 434656 450636 453152 469812 494816 515872 525742 536928 548114 559776 570486 594762 600848 626416 638401 649446 651984 665567 679728 742224 757687 760648 773808 788613 793016 822171 865928 901272 939624 1051484 1096228 1140972 1189524 1201696 1252832 1276802 1298892 1303968 1331134 1359456 1484448 1515374 1521296 1547616 1577226 1586032 1644342 1731856 1802544 1840097 1879248 1915203 1996701 2102968 2192456 2273061 2281944 2379048 2553604 2597784 2662268 3030748 3042592 3154452 3172064 3288684 3463712 3605088 3680194 3758496 3830406 3993402 4205936 4384912 4468807 4546122 4563888 4658969 4758096 5107208 5195568 5324536 5520291 6061496 6308904 6577368 7360388 7660812 7986804 8411872 8769824 8937614 9092244 9127776 9317938 9516192 10214416 10391136 10649072 11040582 12122992 12617808 12880679 13154736 13406421 13976907 14720776 15321624 15973608 17875228 18184488 18635876 20428832 21298144 22081164 24245984 25235616 25761358 26309472 26812842 27953814 29441552 30643248 31281649 31947216 35750456 36368976 37271752 38642037 44162328 51522716 53625684 55907628 58883104 61286496 62563298 63894432 71500912 72737952 74543504 77284074 88324656 93844947 103045432 107251368 111815256 125126596 143001824 149087008 154568148 176649312 187689894 206090864 214502736 218971543 223630512 250253192 309136296 375379788 412181728 429005472 437943086 447261024 500506384 618272592 656914629 750759576 875886172 1001012768 1236545184 1313829258 1501519152 1751772344 2627658516 3003038304 3503544688 5255317032 7007089376 10510634064 21021268128
- Sum of all divisors σ(n): 69844219200
- Sum of proper divisors (its aliquot sum) s(n): 48822951072
- 21021268128 is an abundant number, because the sum of its proper divisors (48822951072) is greater than itself. Its abundance is 27801682944
Bases of 21021268128
- Binary: 100111001001111011100011000101000002
- Hexadecimal: 0x4E4F718A0
- Base-36: 9NNIQAO
Squares and roots of 21021268128
- 21021268128 squared (210212681282) is 441893713709268624384
- 21021268128 cubed (210212681283) is 9289166239960205191953782833152
-
The
square root of 21021268128 is 144987.1309047805 -
The
cube root of 21021268128 is 2759.8552455063
Scales and comparisons
How big is 21021268128?- 21,021,268,128 seconds is equal to 668 years, 21 weeks, 2 days, 17 hours, 8 minutes, 48 seconds.
-
To count from 1 to 21,021,268,128 would take you about one thousand, three hundred thirty-six 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 21021268128 cubic inches would be around 230 feet tall.
Recreational maths with 21021268128
- 21021268128 backwards is 82186212012
- The number of decimal digits it has is: 11
- The sum of 21021268128's digits is 33
- More coming soon!
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The information we have on file for 21021268128 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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