128149840728

Names of 128149840728

• Cardinal: 128149840728 can be written as One hundred twenty-eight billion, one hundred forty-nine million, eight hundred forty thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 1.28149840728 × 10¹¹

Factors of 128149840728

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 601

Divisors of 128149840728

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 13 14 18 21 24 26 28 36 39 42 49 52 56 63 72 78 84 91 98 104 117 126 127 147 156 168 182 196 234 252 254 273 294 312 343 364 381 392 441 449 468 504 508 546 588 637 686 728 762 819 882 889 898 936 1016 1029 1092 1143 1176 1274 1347 1372 1524 1638 1651 1764 1778 1796 1911 2058 2184 2286 2401 2548 2667 2694 2744 3048 3087 3143 3276 3302 3528 3556 3592 3822 4041 4116 4459 4572 4802 4953 5096 5334 5388 5733 5837 6174 6223 6286 6552 6604 7112 7203 7644 8001 8082 8232 8918 9144 9429 9604 9906 10668 10776 11466 11557 11674 12348 12446 12572 13208 13377 14406 14859 15288 16002 16164 17511 17836 18669 18858 19208 19812 21336 21609 22001 22932 23114 23348 24696 24892 25144 26754 28287 28812 29718 31213 32004 32328 34671 35022 35672 37338 37716 39624 40131 40859 43218 43561 44002 45864 46228 46696 49784 52533 53508 56007 56574 57023 57624 59436 62426 64008 66003 69342 70044 74676 75432 80262 80899 81718 86436 87122 88004 92456 93639 104013 105066 107016 112014 113148 114046 118872 122577 124852 130683 132006 138684 140088 149352 154007 160524 161798 163436 171069 172872 174244 176008 187278 198009 208026 210132 224028 226296 228092 242697 245154 249704 261366 264012 277368 280917 286013 304927 308014 321048 323596 326872 342138 348488 367731 374556 392049 396018 399161 416052 420264 448056 456184 462021 485394 490308 513207 522732 528024 561834 566293 572026 609854 616028 647192 684276 728091 735462 741299 749112 784098 792036 798322 832104 858039 914781 924042 970788 980616 1026414 1045464 1078049 1123668 1132586 1144052 1197483 1219708 1232056 1368552 1386063 1456182 1470924 1482598 1568196 1584072 1596644 1698879 1716078 1829562 1848084 1941576 2002091 2052828 2156098 2223897 2247336 2265172 2288104 2394966 2439416 2574117 2744343 2772126 2794127 2912364 2941848 2965196 3136392 3193288 3234147 3397758 3432156 3592449 3659124 3696168 3964051 4004182 4105656 4312196 4447794 4530344 4789932 5096637 5148234 5189093 5488686 5544252 5588254 5824728 5930392 6006273 6468294 6671691 6795516 6864312 7184898 7318248 7928102 8008364 8382381 8624392 8895588 9579864 9702441 10193274 10296468 10378186 10977372 11088504 11176508 11892153 12012546 12936588 13343382 13591032 14014637 14369796 15567279 15856204 16016728 16764762 17791176 18018819 19404882 19558889 20386548 20592936 20756372 21954744 22353016 23784306 24025092 25147143 25873176 26686764 28029274 28739592 31134558 31712408 33529524 35676459 36037638 36323651 38809764 39117778 40773096 41512744 42043911 46701837 47568612 48050184 50294286 53373528 56058548 58676667 62269116 67059048 71352918 72075276 72647302 77619528 78235556 84087822 93403674 95137224 100588572 108970953 112117096 117353334 124538232 126131733 136912223 142705836 144150552 145294604 156471112 168175644 176030001 186807348 201177144 217941906 234706668 252263466 254265557 273824446 285411672 290589208 326912859 336351288 352060002 373614696 410736669 435883812 469413336 504526932 508531114 547648892 653825718 704120004 762796671 821473338 871767624 1009053864 1017062228 1095297784 1232210007 1307651436 1408240008 1525593342 1642946676 1779858899 2034124456 2288390013 2464420014 2615302872 3051186684 3285893352 3559717798 4576780026 4928840028 5339576697 6102373368 7119435596 9153560052 9857680056 10679153394 14238871192 16018730091 18307120104 21358306788 32037460182 42716613576 64074920364 128149840728
• Sum of all divisors σ(n): 440451648000
• Sum of proper divisors (its aliquot sum) s(n): 312301807272
• 128149840728 is an abundant number, because the sum of its proper divisors (312301807272) is greater than itself. Its abundance is 184151966544

Bases of 128149840728

• Binary: 1110111010110010100110110001101011000₂
• Hexadecimal: 0x1DD6536358
• Base-36: 1MVD3TY0

Squares and roots of 128149840728

• 128149840728 squared (128149840728²) is 16422381678611767569984
• 128149840728 cubed (128149840728³) is 2104525596488523298240005193508352
• The square root of 128149840728 is 357980.2239342279
• The cube root of 128149840728 is 5041.6499690421

Scales and comparisons

• 128,149,840,728 seconds is equal to 4,074 years, 39 weeks, 6 days, 17 hours, 58 minutes, 48 seconds.
• To count from 1 to 128,149,840,728 would take you about eight thousand, one hundred forty-nine 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 128149840728 cubic inches would be around 420.1 feet tall.

Recreational maths with 128149840728

• 128149840728 backwards is 827048941821
• The number of decimal digits it has is: 12
• The sum of 128149840728's digits is 54
• More coming soon!