128538266769920

Names of 128538266769920

• Cardinal: 128538266769920 can be written as One hundred twenty-eight trillion, five hundred thirty-eight billion, two hundred sixty-six million, seven hundred sixty-nine thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.2853826676992 × 10¹⁴

Factors of 128538266769920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 494

Divisors of 128538266769920

• Number of divisors d(n): 640
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 32 35 40 49 56 64 70 71 80 98 112 128 140 142 160 196 224 245 256 280 284 320 343 355 392 409 448 490 497 512 560 568 640 686 710 784 818 896 980 994 1120 1136 1280 1372 1420 1568 1636 1715 1792 1960 1988 2045 2240 2272 2485 2560 2744 2840 2863 3136 3272 3430 3479 3584 3920 3976 4090 4480 4544 4970 5041 5488 5680 5726 6272 6544 6860 6958 7840 7952 8180 8960 9088 9940 10082 10976 11360 11452 12544 13088 13720 13916 14315 15680 15904 16360 17395 17920 18176 19880 20041 20164 21952 22720 22904 24353 25088 25205 26176 27440 27832 28630 29039 31360 31808 32720 34790 35287 36352 39760 40082 40328 43904 45440 45808 48706 50410 52352 54880 55664 57260 58078 62720 63616 65440 69580 70574 79520 80164 80656 87808 90880 91616 97412 100205 100820 104704 109760 111328 114520 116156 121765 125440 127232 130880 139160 140287 141148 145195 159040 160328 161312 175616 176435 181760 183232 194824 200410 201640 203273 209408 219520 222656 229040 232312 243530 247009 254464 261760 278320 280574 282296 290390 318080 320656 322624 352870 357911 366464 389648 400820 403280 406546 439040 445312 458080 464624 487060 494018 523520 556640 561148 564592 580780 636160 641312 645248 701435 705740 715822 732928 779296 801640 806560 813092 878080 890624 916160 929248 974120 988036 1016365 1047040 1113280 1122296 1129184 1161560 1235045 1272320 1282624 1290496 1402870 1411480 1422911 1431644 1465856 1558592 1603280 1613120 1626184 1729063 1781248 1789555 1832320 1858496 1948240 1976072 2032730 2061769 2226560 2244592 2258368 2323120 2470090 2505377 2565248 2580992 2805740 2822960 2845822 2863288 3117184 3206560 3226240 3252368 3458126 3579110 3664640 3716992 3896480 3952144 4065460 4123538 4453120 4489184 4516736 4646240 4940180 5010754 5130496 5611480 5645920 5691644 5726576 6234368 6413120 6452480 6504736 6916252 7114555 7158220 7329280 7433984 7792960 7904288 8130920 8247076 8645315 8906240 8978368 9033472 9292480 9880360 9960377 10021508 10260992 10308845 11222960 11291840 11383288 11453152 12468736 12526885 12826240 12904960 13009472 13832504 14229110 14316440 14432383 14867968 15585920 15808576 16261840 16494152 17290630 17537639 17956736 18066944 18584960 19760720 19920754 20043016 20617690 22445920 22583680 22766576 22906304 25053770 25652480 26018944 27665008 28458220 28632880 28864766 31171840 31617152 32523680 32988304 34581260 35075278 35913472 37169920 39521440 39841508 40086032 41235380 44891840 45167360 45533152 45812608 49801885 50107540 51304960 52037888 55330016 56916440 57265760 57729532 62343680 63234304 65047360 65976608 69162520 70150556 71826944 72161915 74339840 79042880 79683016 80172064 82470760 87688195 89783680 90334720 91066304 91625216 99603770 100215080 101026681 104075776 110660032 113832880 114531520 115459064 122763473 126468608 130094720 131953216 138325040 140301112 144323830 146385599 158085760 159366032 160344128 164941520 175376390 179567360 182132608 183250432 199207540 200430160 202053362 221320064 227665760 229063040 230918128 245526946 260189440 263906432 276650080 280602224 288647660 292771198 316171520 318732064 320688256 329883040 350752780 359134720 364265216 398415080 400860320 404106724 442640128 455331520 458126080 461836256 491053892 505133405 520378880 527812864 553300160 561204448 577295320 585542396 613817365 632343040 637464128 641376512 659766080 701505560 707186767 728530432 731927995 796830160 801720640 808213448 885280256 910663040 916252160 923672512 982107784 1010266810 1024699193 1055625728 1106600320 1122408896 1154590640 1171084792 1227634730 1274928256 1282753024 1319532160 1403011120 1414373534 1463855990 1593660320 1603441280 1616426896 1821326080 1847345024 1964215568 2020533620 2049398386 2213200640 2244817792 2309181280 2342169584 2455269460 2549856512 2639064320 2806022240 2828747068 2927711980 3187320640 3206882560 3232853792 3535933835 3642652160 3694690048 3928431136 4041067240 4098796772 4426401280 4489635584 4618362560 4684339168 4910538920 5099713024 5123495965 5278128640 5612044480 5657494136 5855423960 6374641280 6413765120 6465707584 7071867670 7172894351 7389380096 7856862272 8082134480 8197593544 8979271168 9236725120 9368678336 9821077840 10246991930 11224088960 11314988272 11710847920 12749282560 12931415168 14143735340 14345788702 15713724544 16164268960 16395187088 18473450240 18737356672 19642155680 20493983860 22448177920 22629976544 23421695840 25498565120 25862830336 28287470680 28691577404 31427449088 32328537920 32790374176 35864471755 36946900480 37474713344 39284311360 40987967720 44896355840 45259953088 46843391680 50210260457 51725660672 56574941360 57383154808 62854898176 64657075840 65580748352 71728943510 74949426688 78568622720 81975935440 90519906176 93686783360 100420520914 113149882720 114766309616 129314151680 131161496704 143457887020 157137245440 163951870880 181039812352 187373566720 200841041828 226299765440 229532619232 251051302285 258628303360 262322993408 286915774040 314274490880 327903741760 362079624704 374747133440 401682083656 452599530880 459065238464 502102604570 524645986816 573831548080 655807483520 803364167312 905199061760 918130476928 1004205209140 1147663096160 1311614967040 1606728334624 1810398123520 1836260953856 2008410418280 2295326192320 2623229934080 3213456669248 3672521907712 4016820836560 4590652384640 6426913338496 8033641673120 9181304769280 12853826676992 16067283346240 18362609538560 25707653353984 32134566692480 64269133384960 128538266769920
• Sum of all divisors σ(n): 365431575168000
• Sum of proper divisors (its aliquot sum) s(n): 236893308398080
• 128538266769920 is an abundant number, because the sum of its proper divisors (236893308398080) is greater than itself. Its abundance is 108355041628160

Bases of 128538266769920

• Binary: 11101001110011110100101101110110001101000000000₂
• Hexadecimal: 0x74E7A5BB1A00
• Base-36: 19K9NX9WJK

Squares and roots of 128538266769920

• 128538266769920 squared (128538266769920²) is 16522086024215120110216806400
• 128538266769920 cubed (128538266769920³) is 2123720300976130021712702453971825983488000
• The square root of 128538266769920 is 11337471.7979768311
• The cube root of 128538266769920 is 50467.3862903663

Scales and comparisons

• 128,538,266,769,920 seconds is equal to 4,087,119 years, 14 weeks, 6 days, 22 hours, 45 minutes, 20 seconds.
• To count from 1 to 128,538,266,769,920 would take you about ten million, two hundred seventeen thousand, seven hundred ninety-eight 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 128538266769920 cubic inches would be around 4205.6 feet tall.

Recreational maths with 128538266769920

• 128538266769920 backwards is 029967662835821
• The number of decimal digits it has is: 15
• The sum of 128538266769920's digits is 74
• More coming soon!