21310828728
21,310,828,728 is an even composite number composed of six prime numbers multiplied together.
21310828728 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of three hundred eighty-four divisors.
Prime factorization of 21310828728:
23 × 3 × 73 × 31 × 372 × 61
(2 × 2 × 2 × 3 × 7 × 7 × 7 × 31 × 37 × 37 × 61)See below for interesting mathematical facts about the number 21310828728 from the Numbermatics database.
Names of 21310828728
- Cardinal: 21310828728 can be written as Twenty-one billion, three hundred ten million, eight hundred twenty-eight thousand, seven hundred twenty-eight.
Scientific notation
- Scientific notation: 2.1310828728 × 1010
Factors of 21310828728
Divisors of 21310828728
- Number of divisors d(n): 384
-
Complete list of divisors:
1 2 3 4 6 7 8 12 14 21 24 28 31 37 42 49 56 61 62 74 84 93 98 111 122 124 147 148 168 183 186 196 217 222 244 248 259 294 296 343 366 372 392 427 434 444 488 518 588 651 686 732 744 777 854 868 888 1029 1036 1147 1176 1281 1302 1369 1372 1464 1519 1554 1708 1736 1813 1891 2058 2072 2257 2294 2562 2604 2738 2744 2989 3038 3108 3416 3441 3626 3782 4107 4116 4514 4557 4588 5124 5208 5439 5476 5673 5978 6076 6216 6771 6882 7252 7564 8029 8214 8232 8967 9028 9114 9176 9583 10248 10633 10878 10952 11346 11956 12152 12691 13237 13542 13764 14504 15128 15799 16058 16428 17934 18056 18228 19166 20923 21266 21756 22692 23912 24087 25382 26474 27084 27528 28749 31598 31899 32116 32856 35868 36456 38073 38332 39711 41846 42439 42532 43512 45384 47397 48174 50764 52948 54168 56203 57498 62769 63196 63798 64232 67081 69967 71736 76146 76664 79422 83509 83692 84878 85064 92659 94794 96348 101528 105896 110593 112406 114996 125538 126392 127317 127596 134162 139934 152292 158844 167018 167384 168609 169756 185318 189588 192696 201243 209901 221186 224812 229992 250527 251076 254634 255192 268324 277977 279868 297073 304584 317688 331779 334036 337218 339512 370636 379176 393421 402486 419802 442372 449624 469567 489769 501054 502152 509268 536648 555954 559736 584563 594146 648613 663558 668072 674436 741272 774151 786842 804972 839604 884744 891219 939134 979538 1002108 1018536 1111908 1169126 1180263 1188292 1297226 1327116 1348872 1408701 1469307 1548302 1573684 1609944 1679208 1753689 1782438 1878268 1945839 1959076 2004216 2079511 2223816 2322453 2338252 2360526 2376584 2588779 2594452 2654232 2817402 2938614 3096604 3147368 3428383 3507378 3564876 3756536 3891678 3918152 4091941 4159022 4644906 4676504 4721052 5177558 5188904 5634804 5877228 6193208 6238533 6856766 7014756 7129752 7766337 7783356 8183882 8318044 9289812 9442104 10285149 10355116 11269608 11754456 12275823 12477066 13713532 14029512 14556577 15532674 15566712 16367764 16636088 18121453 18579624 20570298 20710232 23998681 24551646 24954132 27427064 28643587 29113154 31065348 32735528 36242906 41140596 43669731 47997362 49103292 49908264 54364359 57287174 58226308 62130696 71996043 72485812 82281192 85930761 87339462 95994724 98206584 108728718 114574348 116452616 126850171 143992086 144971624 171861522 174678924 191989448 217457436 229148696 253700342 287984172 343723044 349357848 380550513 434914872 507400684 575968344 687446088 761101026 887951197 1014801368 1522202052 1775902394 2663853591 3044404104 3551804788 5327707182 7103609576 10655414364 21310828728
- Sum of all divisors σ(n): 66995712000
- Sum of proper divisors (its aliquot sum) s(n): 45684883272
- 21310828728 is an abundant number, because the sum of its proper divisors (45684883272) is greater than itself. Its abundance is 24374054544
Bases of 21310828728
- Binary: 100111101100011100101110000101110002
- Hexadecimal: 0x4F63970B8
- Base-36: 9SFX0OO
Squares and roots of 21310828728
- 21310828728 squared (213108287282) is 454151421074150097984
- 21310828728 cubed (213108287283) is 9678343151089022526301442084352
-
The
square root of 21310828728 is 145982.2890901495 -
The
cube root of 21310828728 is 2772.4695154093
Scales and comparisons
How big is 21310828728?- 21,310,828,728 seconds is equal to 677 years, 32 weeks, 1 day, 2 hours, 38 minutes, 48 seconds.
-
To count from 1 to 21,310,828,728 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 21310828728 cubic inches would be around 231 feet tall.
Recreational maths with 21310828728
- 21310828728 backwards is 82782801312
- 21310828728 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21310828728's digits is 42
- More coming soon!
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The information we have on file for 21310828728 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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