21621728128
21,621,728,128 is an even composite number composed of six prime numbers multiplied together.
21621728128 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of five hundred seventy-six divisors.
Prime factorization of 21621728128:
27 × 7 × 112 × 13 × 232 × 29
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 7 × 11 × 11 × 13 × 23 × 23 × 29)See below for interesting mathematical facts about the number 21621728128 from the Numbermatics database.
Names of 21621728128
- Cardinal: 21621728128 can be written as Twenty-one billion, six hundred twenty-one million, seven hundred twenty-eight thousand, one hundred twenty-eight.
Scientific notation
- Scientific notation: 2.1621728128 × 1010
Factors of 21621728128
Divisors of 21621728128
- Number of divisors d(n): 576
-
Complete list of divisors:
1 2 4 7 8 11 13 14 16 22 23 26 28 29 32 44 46 52 56 58 64 77 88 91 92 104 112 116 121 128 143 154 161 176 182 184 203 208 224 232 242 253 286 299 308 319 322 352 364 368 377 406 416 448 464 484 506 529 572 598 616 638 644 667 704 728 736 754 812 832 847 896 928 968 1001 1012 1058 1144 1196 1232 1276 1288 1334 1408 1456 1472 1508 1573 1624 1664 1694 1771 1856 1936 2002 2024 2093 2116 2233 2288 2392 2464 2552 2576 2639 2668 2783 2912 2944 3016 3146 3248 3289 3388 3509 3542 3703 3712 3872 4004 4048 4147 4186 4232 4466 4576 4669 4784 4928 5104 5152 5278 5336 5566 5819 5824 6032 6292 6496 6578 6776 6877 7018 7084 7337 7406 7744 8008 8096 8294 8372 8464 8671 8932 9152 9338 9568 9856 10208 10304 10556 10672 11011 11132 11638 11648 12064 12584 12992 13156 13552 13754 14036 14168 14674 14812 15341 15488 16016 16192 16588 16744 16928 17342 17864 18304 18676 19136 19481 20416 20608 21112 21344 22022 22264 23023 23276 24128 24563 25168 25984 26312 27104 27508 28072 28336 29029 29348 29624 30682 32032 32384 33176 33488 33856 34684 35728 36179 37352 38272 38962 40733 40832 42224 42688 44044 44528 45617 46046 46552 48139 48256 49126 50336 51359 52624 54208 55016 56144 56672 58058 58696 59248 60697 61364 64009 64064 66352 66976 67712 69368 71456 72358 74704 75647 77924 80707 81466 84448 85376 88088 89056 91234 92092 93104 95381 96278 98252 100672 102718 105248 107387 108416 110032 112288 113344 116116 117392 118496 121394 122728 128018 128128 132704 133952 138736 142912 144716 149408 151294 155848 161414 162932 168751 168896 176176 178112 182468 184184 186208 190762 192556 196504 199433 201344 205436 210496 214774 220064 224576 226688 232232 234784 236992 242788 245456 253253 256036 265408 267904 277472 285824 289432 298816 302588 311696 319319 322828 325864 337502 337792 352352 356224 364936 368368 372416 381524 385112 393008 398866 410872 420992 429548 440128 448063 449152 464464 469568 473984 485576 490912 506506 512072 529529 530816 554944 564949 578864 597632 605176 623392 638638 645656 651728 667667 675004 704704 729872 736736 744832 763048 770224 786016 797732 821744 832117 859096 880256 896126 928928 939136 971152 981824 1013012 1024144 1049191 1059058 1109888 1129898 1157728 1181257 1210352 1246784 1277276 1291312 1303456 1335334 1350008 1396031 1409408 1459744 1473472 1526096 1540448 1572032 1595464 1643488 1664234 1718192 1792252 1856261 1857856 1942304 1963648 2026024 2048288 2098382 2118116 2193763 2259796 2315456 2362514 2420704 2493568 2554552 2582624 2606912 2670668 2700016 2792062 2919488 2946944 3052192 3080896 3144064 3190928 3286976 3328468 3436384 3584504 3712522 3715712 3884608 4052048 4096576 4196764 4236232 4387526 4519592 4630912 4725028 4841408 5109104 5165248 5213824 5341336 5400032 5584124 5824819 5838976 6104384 6161792 6381856 6573952 6656936 6872768 7169008 7344337 7425044 7769216 8104096 8193152 8393528 8472464 8775052 9039184 9450056 9682816 10218208 10330496 10682672 10800064 11168248 11649638 12208768 12763712 12993827 13313872 13745536 14338016 14688674 14850088 15356341 16208192 16787056 16944928 17550104 18078368 18900112 20436416 21365344 21600128 22336496 23299276 24131393 25527424 25987654 26627744 28676032 29377348 29700176 30712682 32416384 33574112 33889856 35100208 36156736 37800224 40872832 42730688 44672992 46598552 48262786 51975308 53255488 57352064 58754696 59400352 61425364 67148224 67779712 70200416 72313472 75600448 85461376 89345984 93197104 96525572 103950616 106510976 117509392 118800704 122850728 134296448 140400832 151200896 168919751 178691968 186394208 193051144 207901232 235018784 237601408 245701456 280801664 337839502 372788416 386102288 415802464 470037568 491402912 675679004 745576832 772204576 831604928 940075136 982805824 1351358008 1544409152 1663209856 1965611648 2702716016 3088818304 5405432032 10810864064 21621728128
- Sum of all divisors σ(n): 63016783200
- Sum of proper divisors (its aliquot sum) s(n): 41395055072
- 21621728128 is an abundant number, because the sum of its proper divisors (41395055072) is greater than itself. Its abundance is 19773326944
Bases of 21621728128
- Binary: 101000010001100000101100011100000002
- Hexadecimal: 0x508C16380
- Base-36: 9XL0O74
Squares and roots of 21621728128
- 21621728128 squared (216217281282) is 467499127241146384384
- 21621728128 cubed (216217281283) is 10108139029285345818201032753152
-
The
square root of 21621728128 is 147043.2865791567 -
The
cube root of 21621728128 is 2785.8868116315
Scales and comparisons
How big is 21621728128?- 21,621,728,128 seconds is equal to 687 years, 26 weeks, 1 day, 11 hours, 35 minutes, 28 seconds.
-
To count from 1 to 21,621,728,128 would take you about one thousand, three hundred seventy-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 21621728128 cubic inches would be around 232.2 feet tall.
Recreational maths with 21621728128
- 21621728128 backwards is 82182712612
- The number of decimal digits it has is: 11
- The sum of 21621728128's digits is 40
- More coming soon!
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