128690796720

Names of 128690796720

• Cardinal: 128690796720 can be written as One hundred twenty-eight billion, six hundred ninety million, seven hundred ninety-six thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.2869079672 × 10¹¹

Factors of 128690796720

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 327

Divisors of 128690796720

• Number of divisors d(n): 640
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 29 30 40 41 48 53 58 60 67 80 82 87 106 116 120 123 127 134 145 159 164 174 201 205 212 232 240 246 254 265 268 290 318 328 335 348 381 402 410 424 435 464 492 508 530 536 580 615 635 636 656 670 696 762 795 804 820 848 870 984 1005 1016 1060 1072 1160 1189 1230 1270 1272 1340 1392 1524 1537 1590 1608 1640 1740 1905 1943 1968 2010 2032 2120 2173 2320 2378 2460 2540 2544 2680 2747 3048 3074 3180 3216 3280 3480 3551 3567 3683 3810 3886 4020 4240 4346 4611 4756 4920 5080 5207 5360 5494 5829 5945 6096 6148 6360 6519 6731 6960 7102 7134 7366 7620 7685 7772 8040 8241 8509 8692 9222 9512 9715 9840 10160 10414 10653 10865 10988 11049 11658 11890 12296 12720 13038 13462 13735 14204 14268 14732 15240 15370 15544 15621 16080 16482 17018 17384 17755 17835 18415 18444 19024 19430 20193 20828 21306 21730 21976 22098 23055 23316 23780 24592 25527 26035 26076 26924 27470 28408 28536 29145 29464 30480 30740 31088 31242 32595 32964 33655 34036 34768 35510 35670 36830 36888 38860 40386 41205 41656 42545 42612 43460 43952 44196 46110 46632 47560 51054 52070 52152 53265 53848 54940 55245 56816 57072 58290 58928 61480 62484 63017 65190 65928 67310 68072 71020 71340 73660 73776 77720 78105 79663 80772 82410 83312 85090 85224 86920 88392 92220 93264 95120 100965 102108 102979 104140 104304 106530 107696 109880 110490 116580 122960 124968 126034 127635 130380 131856 134620 136144 142040 142680 145591 147320 151003 155440 156210 159326 161544 164820 170180 170448 173840 176784 184440 189051 195199 201930 204216 205958 208280 213060 219760 220980 233160 238989 246761 249936 252068 255270 260760 269240 275971 284080 285360 291182 294640 302006 308937 312420 315085 318652 323088 329640 340360 348869 368880 378102 390398 398315 403860 408432 411916 416560 426120 436773 441960 450977 453009 466320 477978 493522 504136 510540 514895 521520 538480 551942 582364 585597 604012 617874 624840 630170 637304 659280 680720 697738 727955 740283 755015 756204 780796 796630 807720 823832 827913 852240 873546 883920 901954 906018 945255 955956 975995 987044 1008272 1021080 1029790 1046607 1103884 1164728 1171194 1194945 1208024 1233805 1235748 1249680 1260340 1274608 1352931 1379855 1395476 1455910 1480566 1510030 1512408 1544685 1561592 1593260 1615440 1647664 1655826 1744345 1747092 1803908 1812036 1890510 1911912 1951990 1974088 2042160 2059580 2093214 2183865 2207768 2254885 2265045 2329456 2342388 2389890 2416048 2467610 2471496 2520680 2705862 2759710 2790952 2911820 2927985 2961132 3020060 3024816 3089370 3123184 3186520 3311652 3488690 3494184 3607816 3624072 3701415 3781020 3823824 3903980 3948176 4119160 4139565 4186428 4222139 4367730 4415536 4509770 4530090 4684776 4779780 4935220 4942992 5041360 5233035 5411724 5519420 5581904 5823640 5855970 5922264 6040120 6178740 6373040 6623304 6764655 6977380 6988368 7215632 7248144 7402830 7562040 7807960 8003159 8238320 8279130 8372856 8444278 8735460 9019540 9060180 9369552 9559560 9870440 10117201 10466070 10823448 11038840 11647280 11711940 11844528 12080240 12357480 12666417 13078333 13246608 13529310 13954760 14805660 15124080 15615920 16006318 16558260 16745712 16888556 17470920 18039080 18120360 18490057 19119120 19740880 20234402 20932140 21110695 21646896 22077680 23423880 24009477 24714960 25332834 26156666 27058620 27909520 29611320 30351603 32012636 33116520 33777112 34941840 36078160 36240720 36980114 39234999 40015795 40468804 41864280 42221390 46847760 48018954 50586005 50665668 52313332 54117240 55470171 59222640 60703206 63332085 64025272 65391665 66233040 67554224 73960228 78469998 80031590 80937608 83728560 84442780 92450285 96037908 101172010 101331336 104626664 108234480 110940342 120047385 121406412 126664170 128050544 130783330 147920456 151758015 156939996 160063180 161875216 168885560 184900570 192075816 196174995 202344020 202662672 209253328 221880684 240094770 242812824 253328340 261566660 277350855 295840912 303516030 313879992 320126360 337771120 369801140 384151632 392349990 404688040 443761368 480189540 485625648 506656680 523133320 536211653 554701710 607032060 627759984 640252720 739602280 784699980 809376080 887522736 960379080 1013313360 1046266640 1072423306 1109403420 1214064120 1479204560 1569399960 1608634959 1920758160 2144846612 2218806840 2428128240 2681058265 3138799920 3217269918 4289693224 4437613680 5362116530 6434539836 8043174795 8579386448 10724233060 12869079672 16086349590 21448466120 25738159344 32172699180 42896932240 64345398360 128690796720
• Sum of all divisors σ(n): 440611799040
• Sum of proper divisors (its aliquot sum) s(n): 311921002320
• 128690796720 is an abundant number, because the sum of its proper divisors (311921002320) is greater than itself. Its abundance is 183230205600

Bases of 128690796720

• Binary: 1110111110110100100011011100010110000₂
• Hexadecimal: 0x1DF691B8B0
• Base-36: 1N4B6E9C

Squares and roots of 128690796720

• 128690796720 squared (128690796720²) is 16561321160428362758400
• 128690796720 cubed (128690796720³) is 2131289614871320939863672872448000
• The square root of 128690796720 is 358734.9951147783
• The cube root of 128690796720 is 5048.7340776167

Scales and comparisons

• 128,690,796,720 seconds is equal to 4,091 years, 50 weeks, 2 days, 19 hours, 32 minutes.
• To count from 1 to 128,690,796,720 would take you about eight thousand, one hundred eighty-three 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 128690796720 cubic inches would be around 420.7 feet tall.

Recreational maths with 128690796720

• 128690796720 backwards is 027697096821
• The number of decimal digits it has is: 12
• The sum of 128690796720's digits is 57
• More coming soon!