128536657920

Names of 128536657920

• Cardinal: 128536657920 can be written as One hundred twenty-eight billion, five hundred thirty-six million, six hundred fifty-seven thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.2853665792 × 10¹¹

Factors of 128536657920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 22
• Sum of prime factors: 608

Divisors of 128536657920

• Number of divisors d(n): 720
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 11 12 15 16 18 20 22 24 27 30 32 33 36 40 44 45 48 54 55 60 64 66 72 80 81 88 90 96 99 108 110 120 128 132 135 144 160 162 165 176 180 192 198 216 220 240 243 256 264 270 288 297 320 324 330 352 360 384 396 405 432 440 480 486 495 512 528 540 576 587 594 640 648 660 704 720 768 792 810 864 880 891 960 972 990 1024 1056 1080 1152 1174 1188 1215 1280 1296 1320 1408 1440 1485 1536 1584 1620 1728 1760 1761 1782 1920 1944 1980 2048 2112 2160 2304 2348 2376 2430 2560 2592 2640 2673 2816 2880 2935 2970 3072 3168 3240 3456 3520 3522 3564 3840 3888 3960 4096 4224 4320 4455 4608 4696 4752 4860 5120 5184 5280 5283 5346 5632 5760 5870 5940 6144 6336 6457 6480 6912 7040 7044 7128 7680 7776 7920 8192 8448 8640 8805 8910 9216 9392 9504 9720 10240 10368 10560 10566 10692 11264 11520 11740 11880 12288 12672 12914 12960 13365 13824 14080 14088 14256 15360 15552 15840 15849 16384 16896 17280 17610 17820 18432 18784 19008 19371 19440 20480 20736 21120 21132 21384 22528 23040 23480 23760 24576 25344 25828 25920 26415 26730 27648 28160 28176 28512 30720 31104 31680 31698 32285 33792 34560 35220 35640 36864 37568 38016 38742 38880 40960 41472 42240 42264 42768 45056 46080 46960 47520 47547 49152 50688 51656 51840 52830 53460 55296 56320 56352 57024 58113 61440 62208 63360 63396 64570 67584 69120 70440 71280 73728 75136 76032 77484 77760 79245 81920 82944 84480 84528 85536 90112 92160 93920 95040 95094 96855 101376 103312 103680 105660 106920 110592 112640 112704 114048 116226 122880 124416 126720 126792 129140 135168 138240 140880 142560 142641 147456 150272 152064 154968 155520 158490 165888 168960 169056 171072 174339 180224 184320 187840 190080 190188 193710 202752 206624 207360 211320 213840 221184 225280 225408 228096 232452 237735 245760 248832 253440 253584 258280 270336 276480 281760 285120 285282 290565 300544 304128 309936 311040 316980 331776 337920 338112 342144 348678 368640 375680 380160 380376 387420 405504 413248 414720 422640 427680 442368 450560 450816 456192 464904 475470 497664 506880 507168 516560 523017 540672 552960 563520 570240 570564 581130 601088 608256 619872 622080 633960 663552 675840 676224 684288 697356 713205 737280 751360 760320 760752 774840 811008 826496 829440 845280 855360 871695 901120 901632 912384 929808 950940 995328 1013760 1014336 1033120 1046034 1105920 1127040 1140480 1141128 1162260 1202176 1216512 1239744 1244160 1267920 1327104 1351680 1352448 1368576 1394712 1426410 1502720 1520640 1521504 1549680 1569051 1622016 1652992 1658880 1690560 1710720 1743390 1803264 1824768 1859616 1901880 1990656 2027520 2028672 2066240 2092068 2211840 2254080 2280960 2282256 2324520 2404352 2433024 2479488 2488320 2535840 2615085 2703360 2704896 2737152 2789424 2852820 3005440 3041280 3043008 3099360 3138102 3305984 3317760 3381120 3421440 3486780 3606528 3649536 3719232 3803760 3981312 4055040 4057344 4132480 4184136 4508160 4561920 4564512 4649040 4808704 4866048 4958976 4976640 5071680 5230170 5409792 5474304 5578848 5705640 6010880 6082560 6086016 6198720 6276204 6611968 6635520 6762240 6842880 6973560 7213056 7299072 7438464 7607520 7845255 8110080 8114688 8264960 8368272 9016320 9123840 9129024 9298080 9617408 9917952 9953280 10143360 10460340 10819584 10948608 11157696 11411280 12021760 12165120 12172032 12397440 12552408 13223936 13524480 13685760 13947120 14426112 14598144 14876928 15215040 15690510 16229376 16529920 16736544 18032640 18247680 18258048 18596160 19835904 19906560 20286720 20920680 21639168 21897216 22315392 22822560 24043520 24330240 24344064 24794880 25104816 26447872 27048960 27371520 27894240 28852224 29753856 30430080 31381020 32458752 33059840 33473088 36065280 36495360 36516096 37192320 39671808 40573440 41841360 43278336 43794432 44630784 45645120 48087040 48688128 49589760 50209632 52895744 54097920 54743040 55788480 59507712 60860160 62762040 64917504 66119680 66946176 72130560 72990720 73032192 74384640 79343616 81146880 83682720 86556672 89261568 91290240 97376256 99179520 100419264 105791488 108195840 109486080 111576960 119015424 121720320 125524080 129835008 132239360 133892352 144261120 146064384 148769280 158687232 162293760 167365440 178523136 182580480 194752512 198359040 200838528 216391680 218972160 223153920 238030848 243440640 251048160 259670016 264478720 267784704 292128768 297538560 317374464 324587520 334730880 357046272 365160960 389505024 396718080 401677056 432783360 446307840 476061696 486881280 502096320 528957440 535569408 584257536 595077120 649175040 669461760 714092544 730321920 779010048 793436160 803354112 892615680 952123392 973762560 1004192640 1071138816 1168515072 1190154240 1298350080 1338923520 1428185088 1460643840 1586872320 1606708224 1785231360 1947525120 2008385280 2142277632 2337030144 2380308480 2677847040 2856370176 2921287680 3213416448 3570462720 3895050240 4016770560 4284555264 4760616960 5355694080 5842575360 6426832896 7140925440 8033541120 8569110528 10711388160 11685150720 12853665792 14281850880 16067082240 21422776320 25707331584 32134164480 42845552640 64268328960 128536657920
• Sum of all divisors σ(n): 504949431168
• Sum of proper divisors (its aliquot sum) s(n): 376412773248
• 128536657920 is an abundant number, because the sum of its proper divisors (376412773248) is greater than itself. Its abundance is 247876115328

Bases of 128536657920

• Binary: 1110111101101011000011100000000000000₂
• Hexadecimal: 0x1DED61C000
• Base-36: 1N1REO00

Squares and roots of 128536657920

• 128536657920 squared (128536657920²) is 16521672429243098726400
• 128536657920 cubed (128536657920³) is 2123640557303915585516064473088000
• The square root of 128536657920 is 358520.0941648877
• The cube root of 128536657920 is 5046.7175731049

Scales and comparisons

• 128,536,657,920 seconds is equal to 4,087 years, 3 weeks, 3 days, 19 hours, 12 minutes.
• To count from 1 to 128,536,657,920 would take you about eight thousand, one hundred seventy-four 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 128536657920 cubic inches would be around 420.6 feet tall.

Recreational maths with 128536657920

• 128536657920 backwards is 029756635821
• 128536657920 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 128536657920's digits is 54
• More coming soon!