128240138520

Names of 128240138520

• Cardinal: 128240138520 can be written as One hundred twenty-eight billion, two hundred forty million, one hundred thirty-eight thousand, five hundred twenty.

Scientific notation

• Scientific notation: 1.2824013852 × 10¹¹

Factors of 128240138520

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 773

Divisors of 128240138520

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 13 15 17 18 20 24 26 27 30 34 36 39 40 45 51 52 54 60 65 68 72 78 85 90 102 104 108 117 120 130 135 136 153 156 170 180 195 204 216 221 234 255 260 270 306 312 340 351 360 390 408 442 459 468 510 520 540 585 612 663 680 702 733 765 780 884 918 936 1020 1080 1105 1170 1224 1326 1404 1466 1530 1560 1755 1768 1836 1989 2040 2199 2210 2295 2340 2652 2808 2932 3060 3315 3510 3665 3672 3978 4398 4420 4590 4680 5304 5864 5967 6120 6597 6630 7020 7330 7956 8796 8840 9180 9529 9945 10995 11934 12461 13194 13260 14040 14660 15912 17592 18360 19058 19791 19890 21990 23868 24922 26388 26520 28587 29320 29835 32985 37383 38116 39582 39780 43980 47645 47736 49844 52776 57174 59670 62305 65970 74766 76232 79164 79560 85761 87960 95290 98955 99688 112149 114348 119340 124610 131940 142935 149532 158328 161993 171522 186915 190580 197910 224298 228696 238680 249220 257283 263880 285870 299064 323986 336447 343044 373830 381160 395820 428805 448596 485979 498440 514566 537289 560745 571740 647972 672894 686088 747660 791640 809965 857610 897192 971958 1029132 1074578 1121490 1143480 1286415 1295944 1345788 1457937 1495320 1611867 1619930 1682235 1715220 1943916 2058264 2149156 2242980 2429895 2572830 2686445 2691576 2915874 3223734 3239860 3364470 3430440 3887832 4298312 4373811 4485960 4835601 4859790 5145660 5372890 5831748 6447468 6479720 6728940 6984757 7289685 8059335 8747622 9133913 9671202 9719580 10291320 10745780 11663496 12894936 13457880 13969514 14506803 14579370 16118670 17495244 18267826 19342404 19439160 20954271 21491560 21869055 24178005 27401739 27939028 29013606 29158740 32237340 34923785 34990488 36535652 38684808 41908542 43738110 45669565 48356010 54803478 55878056 58027212 58317480 62862813 64474680 69847570 72534015 73071304 82205217 83817084 87476220 91339130 96712020 104771355 109606956 116054424 118740869 125725626 137008695 139695140 145068030 164410434 167634168 174952440 182678260 188588439 193424040 209542710 219213912 237481738 246615651 251451252 274017390 279390280 290136060 314314065 328820868 356222607 365356520 377176878 411026085 419085420 474963476 493231302 502902504 548034780 580272120 593704345 628628130 657641736 712445214 754353756 822052170 838170840 942942195 949926952 986462604 1068667821 1096069560 1187408690 1233078255 1257256260 1424890428 1508707512 1644104340 1781113035 1885884390 1972925208 2137335642 2374817380 2466156510 2514512520 2849780856 3206003463 3288208680 3562226070 3771768780 4274671284 4749634760 4932313020 5343339105 6412006926 7124452140 7543537560 8549342568 9864626040 10686678210 12824013852 14248904280 16030017315 21373356420 25648027704 32060034630 42746712840 64120069260 128240138520
• Sum of all divisors σ(n): 488094465600
• Sum of proper divisors (its aliquot sum) s(n): 359854327080
• 128240138520 is an abundant number, because the sum of its proper divisors (359854327080) is greater than itself. Its abundance is 231614188560

Bases of 128240138520

• Binary: 1110111011011101101010011100100011000₂
• Hexadecimal: 0x1DDBB53918
• Base-36: 1MWUV860

Squares and roots of 128240138520

• 128240138520 squared (128240138520²) is 16445533127628787790400
• 128240138520 cubed (128240138520³) is 2108977446322364585380580726208000
• The square root of 128240138520 is 358106.3229265855
• The cube root of 128240138520 is 5042.8338513173

Scales and comparisons

• 128,240,138,520 seconds is equal to 4,077 years, 33 weeks, 1 day, 20 hours, 42 minutes.
• To count from 1 to 128,240,138,520 would take you about eight thousand, one hundred fifty-five 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 128240138520 cubic inches would be around 420.2 feet tall.

Recreational maths with 128240138520

• 128240138520 backwards is 025831042821
• 128240138520 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 128240138520's digits is 36
• More coming soon!