128647249920

Names of 128647249920

• Cardinal: 128647249920 can be written as One hundred twenty-eight billion, six hundred forty-seven million, two hundred forty-nine thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.2864724992 × 10¹¹

Factors of 128647249920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 21
• Sum of prime factors: 1204

Divisors of 128647249920

• Number of divisors d(n): 720
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 27 28 30 32 35 36 40 42 45 48 49 54 56 60 63 64 70 72 80 84 90 96 98 105 108 112 120 126 128 135 140 144 147 160 168 180 189 192 196 210 216 224 240 245 252 256 270 280 288 294 315 320 336 360 378 384 392 420 432 441 448 480 490 504 512 540 560 576 588 630 640 672 720 735 756 768 784 840 864 882 896 945 960 980 1008 1024 1080 1120 1152 1176 1187 1260 1280 1323 1344 1440 1470 1512 1536 1568 1680 1728 1764 1792 1890 1920 1960 2016 2048 2160 2205 2240 2304 2352 2374 2520 2560 2646 2688 2880 2940 3024 3072 3136 3360 3456 3528 3561 3584 3780 3840 3920 4032 4096 4320 4410 4480 4608 4704 4748 5040 5120 5292 5376 5760 5880 5935 6048 6144 6272 6615 6720 6912 7056 7122 7168 7560 7680 7840 8064 8192 8309 8640 8820 8960 9216 9408 9496 10080 10240 10584 10683 10752 11520 11760 11870 12096 12288 12544 13230 13440 13824 14112 14244 14336 15120 15360 15680 16128 16384 16618 17280 17640 17805 17920 18432 18816 18992 20160 20480 21168 21366 21504 23040 23520 23740 24192 24576 24927 25088 26460 26880 27648 28224 28488 28672 30240 30720 31360 32049 32256 33236 34560 35280 35610 35840 36864 37632 37984 40320 40960 41545 42336 42732 43008 46080 47040 47480 48384 49152 49854 50176 52920 53415 53760 55296 56448 56976 57344 58163 60480 61440 62720 64098 64512 66472 69120 70560 71220 71680 73728 74781 75264 75968 80640 81920 83090 84672 85464 86016 92160 94080 94960 96768 99708 100352 105840 106830 107520 110592 112896 113952 114688 116326 120960 122880 124635 125440 128196 129024 132944 138240 141120 142440 143360 147456 149562 150528 151936 160245 161280 166180 169344 170928 172032 174489 184320 188160 189920 193536 199416 200704 211680 213660 215040 221184 224343 225792 227904 232652 241920 245760 249270 250880 256392 258048 265888 276480 282240 284880 286720 290815 299124 301056 303872 320490 322560 332360 338688 341856 344064 348978 368640 373905 376320 379840 387072 398832 401408 423360 427320 430080 442368 448686 451584 455808 465304 483840 498540 501760 512784 516096 523467 531776 552960 564480 569760 573440 581630 598248 602112 607744 640980 645120 664720 677376 683712 697956 737280 747810 752640 759680 774144 797664 802816 846720 854640 860160 872445 897372 903168 911616 930608 967680 997080 1003520 1025568 1032192 1046934 1063552 1105920 1121715 1128960 1139520 1163260 1196496 1204224 1215488 1281960 1290240 1329440 1354752 1367424 1395912 1495620 1505280 1519360 1548288 1570401 1595328 1693440 1709280 1720320 1744890 1794744 1806336 1823232 1861216 1935360 1994160 2007040 2051136 2093868 2127104 2211840 2243430 2257920 2279040 2326520 2392992 2408448 2430976 2563920 2580480 2617335 2658880 2709504 2734848 2791824 2991240 3010560 3038720 3096576 3140802 3190656 3386880 3418560 3489780 3589488 3612672 3646464 3722432 3870720 3988320 4014080 4102272 4187736 4254208 4486860 4515840 4558080 4653040 4785984 4861952 5127840 5160960 5234670 5317760 5419008 5469696 5583648 5982480 6021120 6077440 6281604 6381312 6773760 6837120 6979560 7178976 7225344 7292928 7444864 7741440 7852005 7976640 8204544 8375472 8508416 8973720 9031680 9116160 9306080 9571968 9723904 10255680 10469340 10635520 10838016 10939392 11167296 11964960 12042240 12154880 12563208 12762624 13547520 13674240 13959120 14357952 14585856 14889728 15482880 15704010 15953280 16409088 16750944 17016832 17947440 18063360 18232320 18612160 19143936 19447808 20511360 20938680 21271040 21676032 21878784 22334592 23929920 24309760 25126416 25525248 27095040 27348480 27918240 28715904 29171712 29779456 31408020 31906560 32818176 33501888 34033664 35894880 36126720 36464640 37224320 38287872 41022720 41877360 42542080 43757568 44669184 47859840 48619520 50252832 51050496 54190080 54696960 55836480 57431808 58343424 59558912 62816040 63813120 65636352 67003776 68067328 71789760 72929280 74448640 76575744 82045440 83754720 85084160 87515136 89338368 95719680 97239040 100505664 102100992 108380160 109393920 111672960 114863616 119117824 125632080 127626240 131272704 134007552 136134656 143579520 145858560 148897280 153151488 164090880 167509440 170168320 175030272 178676736 191439360 201011328 204201984 218787840 223345920 229727232 238235648 251264160 255252480 262545408 268015104 287159040 291717120 297794560 306302976 328181760 335018880 340336640 357353472 382878720 402022656 408403968 437575680 446691840 459454464 476471296 502528320 510504960 525090816 536030208 574318080 595589120 612605952 656363520 670037760 680673280 714706944 765757440 804045312 875151360 893383680 918908928 952942592 1005056640 1021009920 1072060416 1148636160 1191178240 1225211904 1312727040 1340075520 1429413888 1531514880 1608090624 1786767360 1837817856 2010113280 2042019840 2144120832 2297272320 2382356480 2625454080 2680151040 2858827776 3063029760 3216181248 3573534720 3675635712 4020226560 4288241664 4594544640 4764712960 5360302080 6126059520 6432362496 7147069440 8040453120 8576483328 9189089280 10720604160 12864724992 14294138880 16080906240 18378178560 21441208320 25729449984 32161812480 42882416640 64323624960 128647249920
• Sum of all divisors σ(n): 532524041280
• Sum of proper divisors (its aliquot sum) s(n): 403876791360
• 128647249920 is an abundant number, because the sum of its proper divisors (403876791360) is greater than itself. Its abundance is 275229541440

Bases of 128647249920

• Binary: 1110111110011111110010100000000000000₂
• Hexadecimal: 0x1DF3F94000
• Base-36: 1N3L91C0

Squares and roots of 128647249920

• 128647249920 squared (128647249920²) is 16550114911978940006400
• 128647249920 cubed (128647249920³) is 2129126769286073496780027199488000
• The square root of 128647249920 is 358674.2950365973
• The cube root of 128647249920 is 5048.1645444877

Scales and comparisons

• 128,647,249,920 seconds is equal to 4,090 years, 30 weeks, 2 days, 19 hours, 12 minutes.
• To count from 1 to 128,647,249,920 would take you about eight thousand, one hundred eighty-one 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 128647249920 cubic inches would be around 420.7 feet tall.

Recreational maths with 128647249920

• 128647249920 backwards is 029942746821
• 128647249920 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 128647249920's digits is 54
• More coming soon!