128518260390

Names of 128518260390

• Cardinal: 128518260390 can be written as One hundred twenty-eight billion, five hundred eighteen million, two hundred sixty thousand, three hundred ninety.

Scientific notation

• Scientific notation: 1.2851826039 × 10¹¹

Factors of 128518260390

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 612

Divisors of 128518260390

• Number of divisors d(n): 448
• Complete list of divisors:
  1 2 3 5 6 9 10 13 15 17 18 26 27 30 34 39 45 51 54 65 78 81 85 90 102 117 130 135 153 162 170 195 221 234 241 243 255 270 306 331 351 390 405 442 459 482 486 510 585 662 663 702 723 729 765 810 918 993 1053 1105 1170 1205 1215 1326 1377 1446 1458 1530 1655 1755 1986 1989 2106 2169 2210 2295 2410 2430 2754 2979 3133 3159 3310 3315 3510 3615 3645 3978 4097 4131 4303 4338 4590 4965 5265 5627 5958 5967 6266 6318 6507 6630 6885 7230 7290 8194 8262 8606 8937 9399 9477 9930 9945 10530 10845 11254 11934 12291 12393 12909 13014 13770 14895 15665 15795 16881 17874 17901 18798 18954 19521 19890 20485 20655 21515 21690 24582 24786 25818 26811 28135 28197 29790 29835 31330 31590 32535 33762 35802 36873 38727 39042 40970 41310 43030 44685 46995 47385 50643 53261 53622 53703 56270 56394 58563 59670 61455 61965 64545 65070 73151 73746 77454 79771 80433 84405 84591 89370 89505 93990 94770 97605 101286 106522 107406 110619 116181 117126 122910 123930 129090 134055 140985 146302 151929 159542 159783 160866 161109 168810 169182 175689 179010 184365 193635 195210 219453 221238 232362 239313 241299 253215 253773 266305 268110 268515 281970 292815 303858 319566 322218 331857 348543 351378 365755 368730 387270 398855 402165 422955 438906 455787 478626 479349 482598 506430 507546 532610 537030 553095 580905 585630 658359 663714 697086 717939 731510 759645 761319 797710 798915 804330 805545 845910 878445 911574 958698 995571 1037023 1045629 1097265 1106190 1161810 1196565 1206495 1268865 1316718 1356107 1367361 1435878 1438047 1519290 1522638 1597830 1611090 1659285 1742715 1756890 1975077 1991142 2074046 2091258 2153817 2194530 2278935 2283957 2393130 2396745 2412990 2537730 2712214 2734722 2876094 2986713 3111069 3136887 3291795 3318570 3485430 3589695 3806595 3950154 4068321 4102083 4307634 4314141 4557870 4567914 4793490 4977855 5185115 5228145 5925231 5973426 6222138 6273774 6461451 6583590 6780535 6836805 7179390 7190235 7613190 8136642 8204166 8628282 9333207 9875385 9955710 10370230 10456290 10769085 11419785 11850462 12204963 12922902 12942423 13561070 13673610 14380470 14933565 15555345 15684435 17629391 17775693 18666414 19384353 19750770 20341605 20510415 21538170 21570705 22839570 24409926 25884846 27999621 29626155 29867130 31110690 31368870 32307255 35258782 35551386 36614889 38768706 38827269 40683210 41020830 43141410 46666035 52888173 53327079 55999242 58153059 59252310 61024815 64614510 64712115 73229778 77654538 83998863 88146955 88878465 93332070 96921765 105776346 106654158 109844667 116306118 122049630 129424230 139998105 158664519 167997726 176293910 177756930 183074445 193843530 194136345 219689334 251996589 264440865 266635395 279996210 290765295 317329038 329534001 366148890 388272690 419994315 475993557 503993178 528881730 533270790 549223335 581530590 659068002 755989767 793322595 839988630 951987114 988602003 1098446670 1259982945 1427980671 1511979534 1586645190 1647670005 1977204006 2379967785 2519965890 2855961342 3295340010 3779948835 4283942013 4759935570 4943010015 7139903355 7559897670 8567884026 9886020030 12851826039 14279806710 21419710065 25703652078 42839420130 64259130195 128518260390
• Sum of all divisors σ(n): 398333339712
• Sum of proper divisors (its aliquot sum) s(n): 269815079322
• 128518260390 is an abundant number, because the sum of its proper divisors (269815079322) is greater than itself. Its abundance is 141296818932

Bases of 128518260390

• Binary: 1110111101100010010010000011010100110₂
• Hexadecimal: 0x1DEC4906A6
• Base-36: 1N1GGCDI

Squares and roots of 128518260390

• 128518260390 squared (128518260390²) is 16516943253671842952100
• 128518260390 cubed (128518260390³) is 2122728813922251736129174097319000
• The square root of 128518260390 is 358494.4356471939
• The cube root of 128518260390 is 5046.4767816979

Scales and comparisons

• 128,518,260,390 seconds is equal to 4,086 years, 25 weeks, 20 hours, 46 minutes, 30 seconds.
• To count from 1 to 128,518,260,390 would take you about eight thousand, one hundred seventy-two 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 128518260390 cubic inches would be around 420.5 feet tall.

Recreational maths with 128518260390

• 128518260390 backwards is 093062815821
• 128518260390 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 128518260390's digits is 45
• More coming soon!