128821308408

Names of 128821308408

• Cardinal: 128821308408 can be written as One hundred twenty-eight billion, eight hundred twenty-one million, three hundred eight thousand, four hundred eight.

Scientific notation

• Scientific notation: 1.28821308408 × 10¹¹

Factors of 128821308408

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 344

Divisors of 128821308408

• Number of divisors d(n): 576
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 17 18 24 26 34 36 37 39 51 52 61 68 72 74 78 102 104 111 117 122 136 148 153 156 183 204 211 221 222 234 244 289 296 306 312 333 366 408 422 442 444 468 481 488 549 578 612 629 633 663 666 732 793 844 867 884 888 936 962 1037 1098 1156 1224 1258 1266 1326 1332 1443 1464 1586 1688 1734 1768 1887 1899 1924 1989 2074 2196 2257 2312 2379 2516 2532 2601 2652 2664 2743 2886 3111 3172 3468 3587 3757 3774 3798 3848 3978 4148 4329 4392 4514 4758 5032 5064 5202 5304 5486 5661 5772 6222 6344 6771 6936 7137 7174 7514 7548 7596 7807 7956 8177 8229 8296 8658 9028 9333 9516 10404 10693 10761 10972 11271 11322 11544 12444 12871 13481 13542 14274 14348 15028 15096 15192 15614 15912 16354 16458 17316 17629 18056 18666 19032 20313 20808 21386 21522 21944 22542 22644 23421 24531 24687 24888 25742 26962 27084 28548 28696 29341 30056 31228 32079 32283 32708 32916 33813 34632 35258 37332 38369 38613 40443 40626 42772 43044 45084 45288 46631 46842 49062 49374 51484 52887 53924 54168 57096 58682 60979 62456 64158 64566 65416 65832 67626 70263 70516 73593 74664 76738 77226 80886 81252 85544 86088 88023 90168 93262 93684 96237 98124 98748 101491 102968 105774 107848 115107 115839 117364 121329 121958 128316 129132 132719 135252 139009 139893 140526 141032 147186 153476 154452 158661 161772 162504 167323 176046 182937 186524 187368 192474 196248 197496 202982 211548 218807 229177 230214 231678 234728 242658 243916 256632 258264 264069 265438 270504 278018 279786 281052 294372 304473 306952 308904 317322 323544 334646 345321 352092 365874 373048 384948 398157 405964 417027 419679 423096 437614 458354 460428 463356 476227 485316 487832 498797 501969 528138 530876 548811 556036 559572 562104 588744 608946 634644 652273 656421 669292 687531 690642 704184 731748 769896 792727 796314 811928 834054 839358 875228 913419 916708 920856 926712 952454 970632 997594 1003938 1056276 1061752 1097622 1112072 1119144 1194471 1217892 1251081 1269288 1304546 1312842 1338584 1375062 1381284 1428681 1463496 1496391 1505907 1585454 1592628 1668108 1678716 1725347 1750456 1826838 1833416 1904908 1956819 1969263 1995188 2007876 2062593 2112552 2195244 2256223 2378181 2388942 2435784 2502162 2609092 2625684 2750124 2762568 2844491 2857362 2992782 3011814 3170908 3185256 3336216 3357432 3450694 3653676 3719719 3809816 3913638 3938526 3990376 4015752 4125186 4286043 4390488 4489173 4512446 4756362 4777884 5004324 5176041 5218184 5251368 5500248 5688982 5714724 5870457 5985564 6023628 6190951 6341816 6768669 6901388 7134543 7307352 7439438 7827276 7877052 8095859 8250372 8479549 8533473 8572086 8978346 9024892 9512724 9555768 10008648 10352082 11159157 11377964 11429448 11740914 11971128 12047256 12381902 13537338 13802776 14269086 14878876 15528123 15654552 15754104 16191718 16500744 16959098 17066946 17144172 17956692 18049784 18572853 19025448 20306007 20704164 22318314 22755928 23481828 24287577 24763804 25438647 25600419 27074676 28538172 29330899 29757752 31056246 32383436 33477471 33918196 34133892 34288344 35913384 37145706 40612014 41408328 44636628 46963656 48356347 48575154 49527608 50877294 51200838 54149352 55718559 57076344 58661798 62112492 64766872 66954942 67836392 68267784 72862731 74291412 76315941 81224028 87992697 89273256 96712694 97150308 101754588 102401676 105246167 111437118 117323596 124224984 133909884 137629603 145069041 145725462 148582824 152631882 162448056 175985394 193425388 194300616 203509176 204803352 210492334 222874236 234647192 263978091 267819768 275259206 290138082 291450924 305263764 315738501 351970788 386850776 412888809 420984668 435207123 445748472 527956182 550518412 580276164 582901848 610527528 631477002 703941576 825777618 841969336 870414246 947215503 1055912364 1101036824 1160552328 1238666427 1262954004 1651555236 1740828492 1789184839 1894431006 2111824728 2477332854 2525908008 3303110472 3481656984 3578369678 3788862012 4954665708 5367554517 7156739356 7577724024 9909331416 10735109034 14313478712 16102663551 21470218068 32205327102 42940436136 64410654204 128821308408
• Sum of all divisors σ(n): 418612477920
• Sum of proper divisors (its aliquot sum) s(n): 289791169512
• 128821308408 is an abundant number, because the sum of its proper divisors (289791169512) is greater than itself. Its abundance is 160969861104

Bases of 128821308408

• Binary: 1110111111110010110010010101111111000₂
• Hexadecimal: 0x1DFE592BF8
• Base-36: 1N6GVPQ0

Squares and roots of 128821308408

• 128821308408 squared (128821308408²) is 16594929499949051494464
• 128821308408 cubed (128821308408³) is 2137780531121953982855420248653312
• The square root of 128821308408 is 358916.8544496065
• The cube root of 128821308408 is 5050.4402244471

Scales and comparisons

• 128,821,308,408 seconds is equal to 4,096 years, 6 weeks, 1 day, 8 hours, 46 minutes, 48 seconds.
• To count from 1 to 128,821,308,408 would take you about eight thousand, one hundred ninety-two 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 128821308408 cubic inches would be around 420.9 feet tall.

Recreational maths with 128821308408

• 128821308408 backwards is 804803128821
• The number of decimal digits it has is: 12
• The sum of 128821308408's digits is 45
• More coming soon!