18728690851920

Names of 18728690851920

• Cardinal: 18728690851920 can be written as Eighteen trillion, seven hundred twenty-eight billion, six hundred ninety million, eight hundred fifty-one thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.872869085192 × 10¹³

Factors of 18728690851920

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 13856

Divisors of 18728690851920

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 35 40 42 48 56 60 70 80 84 105 112 120 140 168 210 240 280 336 420 557 560 840 1114 1671 1680 1733 2228 2785 3342 3466 3899 4456 5199 5570 6684 6932 7798 8355 8665 8912 10398 11140 11549 11697 12131 13368 13864 15596 16710 17330 19495 20796 22280 23098 23394 24262 25995 26736 27728 31192 33420 34647 34660 36393 38990 41592 44560 46196 46788 48524 51990 57745 58485 60655 62384 66840 69294 69320 72786 77980 80843 83184 92392 93576 97048 103980 115490 116970 121310 133680 138588 138640 145572 155960 161686 173235 181965 184784 187152 194096 207960 230980 233940 242529 242620 277176 291144 311920 323372 346470 363930 404215 415920 461960 467880 485058 485240 554352 582288 646744 692940 727860 808430 923920 935760 965281 970116 970480 1212645 1293488 1385880 1455720 1616860 1930562 1940232 2425290 2771760 2895843 2911440 3233720 3861124 3880464 4826405 4850580 5791686 6432793 6467440 6756967 7722248 9652810 9701160 11583372 12865586 13513934 14479215 15444496 19298379 19305620 19402320 20014417 20270901 23166744 25731172 27027868 28958430 32163965 33784835 38596758 38611240 40028834 40541802 45029551 46333488 51462344 54055736 57916860 60043251 64327930 67569670 77193516 77222480 80057668 81083604 90059102 96491895 100072085 101354505 102924688 108111472 115833720 120086502 128655860 135088653 135139340 140100919 154387032 160115336 162167208 180118204 192983790 200144170 202709010 225147755 231667440 240173004 257311720 270177306 270278680 280201838 300216255 308774064 320230672 324334416 360236408 385967580 400288340 405418020 420302757 450295510 480346008 514623440 540354612 540557360 560403676 600432510 675443265 700504595 720472816 771935160 800576680 810836040 840605514 900591020 960692016 1080709224 1120807352 1200865020 1350886530 1401009190 1543870320 1601153360 1621672080 1681211028 1801182040 2101513785 2161418448 2241614704 2401730040 2701773060 2802018380 3362422056 3602364080 4203027570 4803460080 5403546120 5604036760 6724844112 8406055140 10807092240 11148030269 11208073520 16812110280 22296060538 33444090807 33624220560 44592121076 55740151345 66888181614 78036211883 89184242152 111480302690 133776363228 156072423766 167220454035 178368484304 222960605380 234108635649 267552726456 312144847532 334440908070 390181059415 445921210760 468217271298 535105452912 624289695064 668881816140 780362118830 891842421520 936434542596 1170543178245 1248579390128 1337763632280 1560724237660 1872869085192 2341086356490 2675527264560 3121448475320 3745738170384 4682172712980 6242896950640 9364345425960 18728690851920
• Sum of all divisors σ(n): 66516317683200
• Sum of proper divisors (its aliquot sum) s(n): 47787626831280
• 18728690851920 is an abundant number, because the sum of its proper divisors (47787626831280) is greater than itself. Its abundance is 29058935979360

Bases of 18728690851920

• Binary: 100010000100010011100111101110010000001010000₂
• Hexadecimal: 0x11089CF72050
• Base-36: 6MZUAZ0PC

Squares and roots of 18728690851920

• 18728690851920 squared (18728690851920²) is 350763861026791895367686400
• 18728690851920 cubed (18728690851920³) is 6569347915196615588798386104455397888000
• The square root of 18728690851920 is 4327665.7509470391
• The cube root of 18728690851920 is 26556.3962595331

Scales and comparisons

• 18,728,690,851,920 seconds is equal to 595,514 years, 22 weeks, 5 days, 5 hours, 32 minutes.
• To count from 1 to 18,728,690,851,920 would take you about one million, four hundred eighty-eight thousand, seven hundred eighty-six 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 18728690851920 cubic inches would be around 2213 feet tall.

Recreational maths with 18728690851920

• 18728690851920 backwards is 02915809682781
• The number of decimal digits it has is: 14
• The sum of 18728690851920's digits is 66
• More coming soon!