128820991572

Names of 128820991572

• Cardinal: 128820991572 can be written as One hundred twenty-eight billion, eight hundred twenty million, nine hundred ninety-one thousand, five hundred seventy-two.

Scientific notation

• Scientific notation: 1.28820991572 × 10¹¹

Factors of 128820991572

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 44

Divisors of 128820991572

• Number of divisors d(n): 720
• Complete list of divisors:
  1 2 3 4 6 7 9 12 13 14 18 19 21 26 27 28 36 38 39 42 49 52 54 57 63 76 78 81 84 91 98 108 114 117 126 133 147 156 162 169 171 182 189 196 228 234 247 252 266 273 294 324 338 342 343 351 361 364 378 399 441 468 494 507 513 532 546 567 588 637 676 684 686 702 722 741 756 798 819 882 931 988 1014 1026 1029 1053 1083 1092 1134 1183 1197 1274 1323 1372 1404 1444 1482 1521 1539 1596 1638 1729 1764 1862 1911 2028 2052 2058 2106 2166 2223 2268 2366 2394 2457 2527 2548 2646 2793 2964 3042 3078 3087 3211 3249 3276 3458 3549 3591 3724 3822 3969 4116 4212 4332 4446 4459 4563 4693 4732 4788 4914 5054 5187 5292 5586 5733 6084 6156 6174 6422 6498 6517 6669 6859 6916 7098 7182 7371 7581 7644 7938 8281 8379 8892 8918 9126 9261 9386 9633 9747 9828 10108 10374 10647 10773 11172 11466 12103 12348 12844 12996 13034 13338 13377 13689 13718 14079 14196 14364 14742 15162 15561 15876 16562 16758 17199 17689 17836 18252 18522 18772 19266 19494 19551 20007 20577 20748 21294 21546 22477 22743 22932 24206 24843 25137 26068 26676 26754 27378 27436 27783 28158 28899 29241 29484 30324 31122 31941 32851 33124 33516 34398 35378 36309 37044 38532 38988 39102 40014 40131 41154 42237 42588 43092 44954 45486 46683 48013 48412 49686 50274 51597 53067 53508 54756 55566 56316 57798 57967 58482 58653 61009 61731 62244 63882 65702 67431 68229 68796 70756 72618 74529 75411 78204 80028 80262 82308 84474 84721 86697 89167 89908 90972 93366 95823 96026 98553 99372 100548 103194 106134 108927 111132 115596 115934 116964 117306 120393 122018 123462 123823 126711 127764 131404 134862 136458 140049 144039 145236 149058 150822 157339 159201 160524 168948 169442 173394 173901 175959 178334 183027 185193 186732 191646 192052 197106 202293 204687 206388 212268 217854 223587 229957 231868 234612 240786 244036 246924 247646 253422 254163 260091 267501 269724 272916 280098 288078 295659 298116 301644 314678 318402 326781 336091 338884 346788 347802 351918 356668 361179 366054 370386 371469 380133 383292 394212 404586 409374 427063 432117 435708 447174 459914 472017 477603 481572 495292 506844 508326 520182 521703 527877 535002 549081 555579 560196 576156 591318 606879 624169 629356 636804 653562 670761 672182 689871 695604 703836 722358 732108 740772 742938 760266 762489 802503 809172 818748 854126 864234 886977 894348 919828 944034 955206 980343 1008273 1016652 1040364 1043406 1055754 1070004 1098162 1101373 1111158 1114407 1159171 1182636 1213758 1248338 1281189 1296351 1307124 1341522 1344364 1379742 1416051 1432809 1444716 1485876 1520532 1524978 1565109 1605006 1609699 1647243 1708252 1728468 1773954 1820637 1872507 1888068 1910412 1960686 2016546 2069613 2086812 2111508 2196324 2202746 2222316 2228814 2287467 2318342 2352637 2407509 2427516 2496676 2562378 2592702 2660931 2683044 2759484 2832102 2865618 2989441 3024819 3049956 3130218 3210012 3219398 3294486 3304119 3343221 3477513 3547908 3641274 3745014 3843567 3889053 3921372 4033092 4139226 4248153 4369183 4405492 4457628 4574934 4636684 4695327 4705274 4815018 4829097 4941729 5124756 5185404 5321862 5617521 5664204 5731236 5978882 6049638 6208839 6260436 6438796 6588972 6608238 6686442 6862401 6955026 7057911 7222527 7282548 7490028 7687134 7778106 8114197 8278452 8496306 8738366 8968323 9074457 9149868 9390654 9410548 9630036 9658194 9883458 9912357 10029663 10432539 10643724 11235042 11530701 11957764 12099276 12417678 12744459 13107549 13216476 13372884 13724802 13910052 14115822 14445054 14487291 15374268 15556212 16228394 16852563 16992612 17476732 17936646 18148914 18626517 18781308 19316388 19766916 19824714 20059326 20865078 20926087 21173733 22470084 23061402 24342591 24835356 25488918 26215098 26904969 27223371 27449604 28231644 28890108 28974582 29737071 30584281 31297617 32456788 33705126 34592103 35873292 36297828 37253034 39322647 39649428 40118652 41730156 41852174 42347466 43461873 46122804 48685182 50557689 50977836 52430196 53809938 54446742 56799379 57949164 59474142 61168562 62595234 62778261 63521199 67410252 69184206 73027773 74506068 78645294 80714907 83704348 84694932 86923746 89211213 91752843 93892851 97370364 101115378 107619876 108893484 113598758 117967941 118948284 122337124 125190468 125556522 127042398 130385619 138368412 146055546 157290588 161429814 170398137 173847492 178422426 183505686 187785702 188334783 190563597 202230756 219083319 227197516 235935882 242144721 251113044 254084796 260771238 275258529 292111092 322859628 340796274 353903823 356844852 367011372 375571404 376669566 381127194 397595653 438166638 471871764 484289442 511194411 521542476 550517058 565004349 657249957 681592548 707807646 753339132 762254388 795191306 825775587 876333276 968578884 1022388822 1101034116 1130008698 1192786959 1314499914 1415615292 1533583233 1590382612 1651551174 1695013047 2044777644 2260017396 2385573918 2477326761 2628999828 3067166466 3303102348 3390026094 3578360877 4600749699 4771147836 4954653522 6134332932 6780052188 7156721754 9201499398 9909307044 10735082631 14313443508 18402998796 21470165262 32205247893 42940330524 64410495786 128820991572
• Sum of all divisors σ(n): 448882896000
• Sum of proper divisors (its aliquot sum) s(n): 320061904428
• 128820991572 is an abundant number, because the sum of its proper divisors (320061904428) is greater than itself. Its abundance is 191240912856

Bases of 128820991572

• Binary: 1110111111110010101000101011001010100₂
• Hexadecimal: 0x1DFE545654
• Base-36: 1N6GOX90

Squares and roots of 128820991572

• 128820991572 squared (128820991572²) is 16594847869593295031184
• 128820991572 cubed (128820991572³) is 2137764757547500014279863541181248
• The square root of 128820991572 is 358916.4130713445
• The cube root of 128820991572 is 5050.4360839245

Scales and comparisons

• 128,820,991,572 seconds is equal to 4,096 years, 5 weeks, 4 days, 16 hours, 46 minutes, 12 seconds.
• To count from 1 to 128,820,991,572 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 128820991572 cubic inches would be around 420.9 feet tall.

Recreational maths with 128820991572

• 128820991572 backwards is 275199028821
• 128820991572 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 128820991572's digits is 54
• More coming soon!