128487636420

Names of 128487636420

• Cardinal: 128487636420 can be written as One hundred twenty-eight billion, four hundred eighty-seven million, six hundred thirty-six thousand, four hundred twenty.

Scientific notation

• Scientific notation: 1.2848763642 × 10¹¹

Factors of 128487636420

• Number of distinct prime factors ω(n): 9
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 794

Divisors of 128487636420

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 4 5 6 10 11 12 13 15 17 19 20 22 26 30 33 34 38 39 44 51 52 55 57 60 65 66 68 71 76 78 85 95 102 110 114 130 132 142 143 156 165 170 187 190 195 204 209 213 220 221 228 247 255 260 284 285 286 323 330 340 355 374 380 390 418 426 429 442 494 510 561 570 572 627 646 653 660 663 710 715 741 748 780 781 836 852 858 884 923 935 969 988 1020 1045 1065 1105 1122 1140 1207 1235 1254 1292 1306 1326 1349 1420 1430 1482 1562 1615 1716 1846 1870 1938 1959 2090 2130 2145 2210 2244 2343 2414 2431 2470 2508 2612 2652 2698 2717 2769 2805 2860 2964 3124 3135 3230 3265 3315 3553 3621 3692 3705 3740 3876 3905 3918 4047 4180 4199 4260 4290 4420 4615 4686 4828 4845 4862 4940 5396 5434 5538 5610 6035 6270 6460 6530 6630 6745 7106 7183 7242 7293 7410 7810 7836 8094 8151 8398 8489 8580 9230 9372 9690 9724 9795 10153 10659 10868 11076 11101 11220 11715 12070 12155 12407 12540 12597 13060 13260 13277 13490 13585 13845 14212 14366 14484 14586 14820 14839 15620 15691 16188 16302 16796 16978 17537 17765 18105 18460 19380 19590 20235 20306 20995 21318 21549 22202 22933 23430 24140 24310 24814 25194 25467 26554 26980 27170 27690 28732 29172 29678 30459 31382 32604 33303 33956 35074 35530 35915 36210 36465 37221 39180 39831 40470 40612 40755 41990 42445 42636 43098 44404 44517 45866 46189 46363 46860 47073 48620 49628 50388 50765 50934 52611 53108 53295 54340 55380 55505 59356 60918 62035 62764 62985 66385 66606 68799 70148 71060 71830 72420 72930 74195 74442 78455 79662 80940 81510 83980 84890 86196 87685 89034 91732 92378 92726 93379 94146 101530 101868 105222 106590 107745 111010 114665 121836 122111 124070 125970 127335 132770 133212 136477 137598 138567 139089 143660 144313 145860 148390 148884 152295 156910 159324 161291 163020 166515 169780 172601 175370 178068 184756 185452 186105 186758 188292 192907 199155 203060 210444 210919 213180 215490 222020 222585 229330 230945 231815 235365 244222 248140 251940 252263 254670 263055 265540 272954 275196 277134 278178 280137 288626 296780 298129 304590 313820 322582 333030 343995 345202 350740 366333 372210 373516 385814 398310 409431 421838 430980 432939 445170 458660 461890 463630 466895 470730 483873 488444 504526 509340 509993 517803 526110 545908 554268 556356 560274 577252 578721 596258 602719 609180 610555 632757 645164 666060 682385 687990 690404 692835 695445 721565 732666 744420 756789 771628 788171 796620 806455 818862 843676 863005 865878 880897 890340 894387 923780 927260 933790 941460 964535 967746 1009052 1019986 1035606 1052220 1054595 1120548 1157442 1192516 1205438 1221110 1261315 1265514 1364770 1375980 1385670 1390890 1400685 1443130 1465332 1490645 1513578 1529979 1576342 1587443 1612910 1637724 1726010 1731756 1761794 1774201 1788774 1808157 1831665 1867580 1929070 1935492 2039972 2047155 2071212 2109190 2164695 2314884 2320109 2364513 2410876 2419365 2442220 2522630 2531028 2549965 2589015 2642691 2729540 2741947 2771340 2781780 2801370 2886260 2893605 2981290 3013595 3027156 3059958 3152684 3163785 3174886 3225820 3279419 3452020 3523588 3548402 3577548 3616314 3663330 3783945 3858140 3940855 4094310 4218380 4329390 4404485 4471935 4640218 4729026 4762329 4838730 5045260 5099930 5178030 5285382 5322603 5483894 5602740 5787210 5962580 6027190 6119916 6327570 6349772 6558838 6629909 6960327 7096804 7232628 7326660 7567890 7649895 7881710 7937215 8188620 8225841 8658780 8669881 8808970 8871005 8943870 9040785 9280436 9458052 9524658 9677460 9689867 9838257 10199860 10246223 10356060 10570764 10645206 10967788 11451661 11574420 11600545 11822565 12054380 12655140 13117676 13213455 13259818 13709735 13920654 14975249 15135780 15299790 15763420 15874430 16397095 16451682 17339762 17617940 17742010 17887740 18081570 19049316 19379734 19676514 19889727 20492446 21290412 22903322 23201090 23645130 23811645 26009643 26426910 26519636 26613015 27419470 27841308 29069601 29950498 30161417 30599580 30738669 31748860 32794190 32903364 33149545 34354983 34679524 34801635 35484020 36163140 38759468 39353028 39779454 40984892 41129205 43349405 44925747 45806644 46402180 47290260 47623290 48449335 49191285 51231115 52019286 52853820 53226030 54838940 57258305 58139202 59900996 60322834 61477338 65588380 66299090 68709966 69603270 74876245 79558908 82258410 86698810 89851494 90484251 95246580 96898670 98382570 99448635 102462230 104038572 106452060 112708453 114516610 116278404 120645668 122954676 125968271 130048215 132598180 137419932 139206540 145348005 149752490 150807085 153693345 164516820 164727739 171774915 173397620 179702988 180968502 193797340 194678237 196765140 198897270 204924460 224628735 225416906 229033220 251936542 260096430 290696010 299504980 301614170 307386690 329455478 338125359 343549830 361937004 377904813 389356474 397794540 449257470 450833812 452421255 494183217 503873084 520192860 563542265 581392020 584034711 603228340 614773380 629841355 658910956 676250718 687099660 755809626 778712948 823638695 898514940 904842510 973391185 988366434 1127084530 1168069422 1259682710 1352501436 1511619252 1647277390 1690626795 1809685020 1889524065 1946782370 1976732868 2141460607 2254169060 2336138844 2470916085 2519365420 2920173555 3294554780 3381253590 3779048130 3893564740 4282921214 4941832170 5840347110 6424381821 6762507180 7558096260 8565842428 9883664340 10707303035 11680694220 12848763642 21414606070 25697527284 32121909105 42829212140 64243818210 128487636420
• Sum of all divisors σ(n): 478444216320
• Sum of proper divisors (its aliquot sum) s(n): 349956579900
• 128487636420 is an abundant number, because the sum of its proper divisors (349956579900) is greater than itself. Its abundance is 221468943480

Bases of 128487636420

• Binary: 1110111101010011101011011110111000100₂
• Hexadecimal: 0x1DEA75BDC4
• Base-36: 1N0Y7YRO

Squares and roots of 128487636420

• 128487636420 squared (128487636420²) is 16509072712798110416400
• 128487636420 cubed (128487636420³) is 2121211732353346692045418005288000
• The square root of 128487636420 is 358451.7211843179
• The cube root of 128487636420 is 5046.0759166647

Scales and comparisons

• 128,487,636,420 seconds is equal to 4,085 years, 26 weeks, 3 days, 10 hours, 7 minutes.
• To count from 1 to 128,487,636,420 would take you about eight thousand, one hundred seventy-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 128487636420 cubic inches would be around 420.5 feet tall.

Recreational maths with 128487636420

• 128487636420 backwards is 024636784821
• 128487636420 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 128487636420's digits is 51
• More coming soon!