128945796720

Names of 128945796720

• Cardinal: 128945796720 can be written as One hundred twenty-eight billion, nine hundred forty-five million, seven hundred ninety-six thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.2894579672 × 10¹¹

Factors of 128945796720

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 314

Divisors of 128945796720

• Number of divisors d(n): 640
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 13 15 16 19 20 24 26 30 38 39 40 48 52 57 60 61 65 76 78 80 95 104 114 120 122 130 152 156 169 183 190 195 208 211 228 240 244 247 260 285 304 305 312 338 366 380 390 422 456 488 494 507 520 570 610 624 633 676 732 741 760 780 793 844 845 912 915 976 988 1014 1040 1055 1140 1159 1220 1235 1266 1352 1464 1482 1520 1560 1586 1688 1690 1830 1976 2028 2110 2197 2280 2318 2379 2440 2470 2532 2535 2704 2743 2928 2964 3120 3165 3172 3211 3376 3380 3477 3660 3705 3952 3965 4009 4056 4220 4394 4560 4636 4758 4880 4940 5064 5070 5486 5795 5928 6330 6344 6422 6591 6760 6954 7320 7410 7930 8018 8112 8229 8440 8788 9272 9516 9633 9880 10128 10140 10309 10972 10985 11590 11856 11895 12027 12660 12688 12844 12871 13182 13520 13715 13908 14640 14820 15067 15860 16036 16055 16458 16880 17385 17576 18544 19032 19266 19760 20045 20280 20618 21944 21970 23180 23790 24054 25320 25688 25742 26364 27430 27816 29640 30134 30927 31720 32072 32110 32916 32955 34770 35152 35659 38064 38532 38613 40090 40560 41145 41236 41743 43888 43940 45201 46360 47580 48108 48165 50640 51376 51484 51545 52117 52728 54860 55632 59280 60135 60268 61854 63440 64144 64220 64355 65832 65910 69540 71318 75335 77064 77226 80180 82290 82472 83486 87880 90402 92720 95160 96216 96330 102968 103090 104234 105456 106977 109720 120270 120536 123708 125229 128440 128710 131664 131820 134017 139080 142636 150670 154128 154452 154635 156351 160360 164580 164944 166972 167323 175760 178295 180804 190320 192432 192660 193065 195871 205936 206180 208468 208715 213954 219440 226005 240540 241072 244549 247416 250458 256880 257420 260585 263640 268034 278160 285272 301340 308904 309270 312702 320720 329160 333944 334646 356590 361608 385320 386130 391742 402051 412360 416936 417430 427908 452010 463567 481080 489098 494832 500916 501969 514840 521170 527280 534885 536068 570544 587613 602680 617808 618540 625404 626145 658320 667888 669292 670085 677521 713180 723216 733647 770640 772260 781755 783484 804102 824720 833872 834860 836615 855816 904020 927134 962160 978196 979355 1001832 1003938 1029680 1042340 1069770 1072136 1175226 1205360 1222745 1237080 1250808 1252290 1338584 1340170 1355042 1390701 1426360 1467294 1544520 1563510 1566968 1608204 1669720 1673230 1711632 1808040 1854268 1956392 1958710 2003664 2007876 2010255 2032563 2084680 2139540 2144272 2175199 2317835 2350452 2445490 2474160 2501616 2504580 2509845 2546323 2677168 2680340 2710084 2781402 2852720 2934588 2938065 3089040 3127020 3133936 3179137 3216408 3339440 3346460 3387605 3616080 3668235 3708536 3912784 3917420 4015752 4020510 4065126 4169360 4279080 4350398 4635670 4700904 4890980 5009160 5019690 5092646 5360680 5420168 5562804 5869176 5876130 6254040 6358274 6432816 6525597 6692920 6775210 6953505 7336470 7417072 7638969 7834840 8031504 8041020 8130252 8558160 8700796 8807773 9271340 9401808 9537411 9781960 10018320 10039380 10162815 10185292 10721360 10840336 10875995 11125608 11738352 11752260 12508080 12716548 12731615 13051194 13385840 13550420 13907010 14672940 15277938 15669680 15895685 16082040 16260504 17401592 17615546 18542680 19074822 19563920 20078760 20325630 20370584 21751990 22251216 23504520 25433096 25463230 26102388 26423319 27100840 27814020 28277587 29345880 30555876 31791370 32164080 32521008 32627985 34803184 35231092 37085360 38149644 38194845 40157520 40651260 40741168 41328781 43503980 44038865 47009040 47687055 50866192 50926460 52204776 52846638 54201680 55628040 56555174 58691760 61111752 63582740 65255970 70462184 76299288 76389690 81302520 82657562 84832761 87007960 88077730 95374110 101852920 104409552 105693276 111256080 113110348 122223504 123986343 127165480 130511940 132116595 140924368 141387935 152598576 152779380 162605040 165315124 169665522 174015920 176155460 190748220 203705840 206643905 211386552 226220696 247972686 254330960 261023880 264233190 282775870 305558760 330630248 339331044 352310920 381496440 413287810 422773104 424163805 452441392 495945372 522047760 528466380 537274153 565551740 611117520 619931715 661260496 678662088 704621840 762992880 826575620 848327610 991890744 1056932760 1074548306 1131103480 1239863430 1357324176 1611822459 1653151240 1696655220 1983781488 2113865520 2149096612 2262206960 2479726860 2686370765 3223644918 3306302480 3393310440 4298193224 4959453720 5372741530 6447289836 6786620880 8059112295 8596386448 9918907440 10745483060 12894579672 16118224590 21490966120 25789159344 32236449180 42981932240 64472898360 128945796720
• Sum of all divisors σ(n): 465486873600
• Sum of proper divisors (its aliquot sum) s(n): 336541076880
• 128945796720 is an abundant number, because the sum of its proper divisors (336541076880) is greater than itself. Its abundance is 207595280160

Bases of 128945796720

• Binary: 1111000000101110001001011011001110000₂
• Hexadecimal: 0x1E05C4B670
• Base-36: 1N8IZXIO

Squares and roots of 128945796720

• 128945796720 squared (128945796720²) is 16627018491755562758400
• 128945796720 cubed (128945796720³) is 2143984146497593791373848872448000
• The square root of 128945796720 is 359090.2347878595
• The cube root of 128945796720 is 5052.0665557075

Scales and comparisons

• 128,945,796,720 seconds is equal to 4,100 years, 4 weeks, 4 hours, 52 minutes.
• To count from 1 to 128,945,796,720 would take you about eight thousand, two hundred 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 128945796720 cubic inches would be around 421 feet tall.

Recreational maths with 128945796720

• 128945796720 backwards is 027697549821
• 128945796720 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 128945796720's digits is 60
• More coming soon!