138978908640

Names of 138978908640

• Cardinal: 138978908640 can be written as One hundred thirty-eight billion, nine hundred seventy-eight million, nine hundred eight thousand, six hundred forty.

Scientific notation

• Scientific notation: 1.3897890864 × 10¹¹

Factors of 138978908640

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 117

Divisors of 138978908640

• Number of divisors d(n): 1728
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 11 12 13 15 16 17 18 20 22 24 26 29 30 32 33 34 36 37 39 40 44 45 48 51 52 55 58 60 65 66 68 72 74 78 80 85 87 88 90 96 99 102 104 110 111 116 117 120 130 132 136 143 144 145 148 153 156 160 165 170 174 176 180 185 187 195 198 204 208 220 221 222 232 234 240 255 260 261 264 272 286 288 290 296 306 312 319 330 333 340 348 352 360 370 374 377 390 396 407 408 416 429 435 440 442 444 464 468 480 481 493 495 510 520 522 528 544 555 561 572 580 585 592 612 624 629 638 660 663 666 680 696 715 720 740 748 754 765 780 792 814 816 858 870 880 884 888 928 935 936 957 962 986 990 1020 1040 1044 1056 1073 1105 1110 1122 1131 1144 1160 1170 1184 1221 1224 1248 1258 1276 1287 1305 1320 1326 1332 1360 1369 1392 1430 1440 1443 1479 1480 1496 1508 1530 1560 1584 1595 1628 1632 1665 1683 1716 1740 1760 1768 1776 1870 1872 1885 1887 1914 1924 1972 1980 1989 2035 2040 2080 2088 2145 2146 2210 2220 2244 2262 2288 2320 2340 2405 2431 2442 2448 2465 2516 2552 2574 2610 2640 2652 2664 2720 2738 2784 2805 2860 2871 2886 2958 2960 2992 3016 3060 3120 3145 3168 3190 3219 3256 3315 3330 3366 3393 3432 3480 3536 3552 3663 3740 3744 3770 3774 3828 3848 3944 3960 3978 4070 4080 4107 4147 4176 4290 4292 4329 4420 4437 4440 4488 4524 4576 4640 4680 4785 4810 4862 4884 4896 4930 5032 5104 5148 5220 5280 5291 5304 5328 5365 5423 5476 5610 5655 5661 5720 5742 5772 5916 5920 5984 6032 6105 6120 6240 6290 6380 6409 6435 6438 6512 6630 6660 6732 6786 6845 6864 6919 6960 7072 7215 7293 7326 7395 7480 7540 7548 7656 7696 7888 7920 7956 8140 8160 8177 8214 8294 8352 8415 8580 8584 8658 8840 8874 8880 8976 9048 9360 9435 9570 9620 9657 9724 9768 9860 9945 10064 10208 10296 10440 10582 10608 10656 10730 10846 10952 11220 11310 11322 11440 11484 11544 11803 11832 12064 12155 12210 12240 12321 12441 12580 12760 12818 12870 12876 13024 13260 13320 13464 13572 13690 13728 13838 13920 13949 14355 14430 14586 14652 14790 14960 15059 15080 15096 15312 15392 15776 15840 15873 15912 16095 16269 16280 16354 16428 16588 16830 16965 17160 17168 17316 17680 17748 17760 17797 17952 18096 18241 18315 18720 18870 19140 19227 19240 19314 19448 19536 19720 19890 20128 20535 20592 20735 20757 20880 21164 21216 21460 21645 21692 21879 21904 22185 22440 22620 22644 22880 22968 23088 23273 23606 23664 24310 24420 24480 24531 24642 24882 25160 25520 25636 25740 25752 26455 26520 26640 26928 27115 27144 27380 27676 27898 28305 28710 28860 29172 29304 29580 29920 30118 30160 30192 30624 31746 31824 32045 32190 32538 32560 32708 32856 33176 33660 33930 34320 34336 34595 34632 35360 35409 35496 35594 36192 36465 36482 36630 37323 37740 38280 38454 38480 38628 38896 39072 39440 39701 39780 40885 41070 41184 41470 41514 41760 41847 42328 42920 43290 43384 43758 43808 44370 44880 45177 45240 45288 45936 46176 46546 47212 47328 47619 48285 48620 48807 48840 49062 49284 49764 50320 51040 51272 51480 51504 52910 53040 53280 53391 53856 54230 54288 54723 54760 55352 55796 56610 57420 57681 57720 58344 58608 59015 59160 60236 60320 60384 61605 62205 62271 63492 63648 64090 64380 65076 65120 65416 65712 66352 67320 67860 68640 69190 69264 69745 69819 70499 70818 70992 71188 72930 72964 73260 73593 74646 75295 75480 76560 76908 76960 77256 77792 78880 79365 79402 79560 81345 81770 82140 82940 83028 83694 84656 85840 86580 86768 87516 88740 88985 89760 89947 90354 90480 90576 91205 91872 93092 94424 95238 96135 96570 97240 97614 97680 98124 98568 99528 100640 102544 102960 103008 103785 105820 106080 106227 106782 108460 108576 109395 109446 109520 110704 111592 113220 114840 115362 115440 116365 116688 117216 118030 118320 119103 120472 122655 123210 124410 124542 125541 126984 128180 128760 130152 130832 131424 132704 134640 135531 135720 138380 138528 139490 139638 140998 141636 141984 142376 145860 145928 146520 147186 149292 150590 150960 153120 153439 153816 154512 158730 158804 159120 160173 162690 163540 164169 164280 165880 166056 167388 169312 171680 173160 173536 175032 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7825389 7830680 7860798 8026040 8095230 8099004 8192096 8257808 8378280 8459880 8498160 8536788 8542560 8634912 8734220 8755680 8773921 8809515 9029295 9076470 9206340 9216108 9228960 9290034 9396816 9485320 9528240 9631248 9681568 9963360 9984117 10043280 10123755 10151856 10240120 10322260 10433852 10481064 10670985 10793640 10798672 10842480 10891764 11047608 11171040 11279840 11354486 11382384 11433888 11520135 11746020 11774880 12039060 12101960 12148506 12275120 12288144 12386712 12689820 12813840 12952368 13042315 13101330 13133520 13312156 13498340 13614705 13809510 13974752 14095224 14227980 14292360 14391520 14446872 14522352 14730144 14848174 15360180 15483390 15650778 15661360 15721596 16052080 16190460 16198008 16515616 16640195 16756560 16919760 16996320 17031729 17073576 17468440 17547842 17619030 18058590 18152940 18412680 18432216 18580068 18793632 18970640 19056480 19262496 19651995 19968234 20086560 20247510 20303712 20480240 20644520 20867704 20962128 21341970 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68294304 69873760 70191368 70476120 72234360 72611760 73650720 73728864 74240870 74320272 78253890 78607980 78965289 79872936 80990040 82578080 83470816 85158645 85367880 87134112 87739210 89089044 90835888 92161080 92900340 93904668 93968160 96312480 96513131 97188048 99841170 101518560 102190374 104338520 104810640 105287052 106497248 107986720 108917640 110476080 111361305 113544860 113823840 117380835 118785392 119809404 121485060 122881440 123867120 125206224 125772768 129523680 131608815 133121560 133633566 136253832 140382736 140952240 144468720 145223520 148481740 148640544 149761755 156507780 157215960 157930578 159745872 161980080 170317290 170735760 175478420 178178088 181671776 184322160 185800680 187809336 193026262 194376096 199682340 204380748 208677040 209621280 210574104 217835280 220952160 222722610 227089720 234761670 237570784 239618808 242970120 247734240 250412448 255475935 263217630 266243120 267267132 272507664 280765472 281904480 288937440 289539393 296963480 299523510 313015560 314431920 315861156 319491744 323960160 334083915 340634580 341471520 350956840 356356176 368644320 371601360 375618672 386052524 394826445 399364680 408761496 417354080 421148208 435670560 445445220 454179440 469523340 479237616 482565655 485940240 510951870 526435260 532486240 534534264 545015328 579078786 593926960 599047020 626031120 628863840 631722312 668167830 681269160 701913680 712712352 743202720 751237344 772105048 789652890 798729360 817522992 842296416 868618179 890890440 908358880 939046680 958475232 965131310 971880480 1021903740 1052870520 1069068528 1158157572 1187853920 1198094040 1252062240 1263444624 1336335660 1362538320 1403827360 1447696965 1544210096 1579305780 1597458720 1635045984 1737236358 1781780880 1878093360 1930262620 2043807480 2105741040 2138137056 2316315144 2396188080 2526889248 2672671320 2725076640 2895393930 3088420192 3158611560 3474472716 3563561760 3756186720 3860525240 4087614960 4211482080 4343090895 4632630288 4792376160 5345342640 5790787860 6317223120 6948945432 7721050480 8175229920 8686181790 9265260576 10690685280 11581575720 12634446240 13897890864 15442100960 17372363580 23163151440 27795781728 34744727160 46326302880 69489454320 138978908640
• Sum of all divisors σ(n): 627237898560
• Sum of proper divisors (its aliquot sum) s(n): 488258989920
• 138978908640 is an abundant number, because the sum of its proper divisors (488258989920) is greater than itself. Its abundance is 349280081280

Bases of 138978908640

• Binary: 10000001011011110010011101100111100000₂
• Hexadecimal: 0x205BC9D9E0
• Base-36: 1RUGGC80

Squares and roots of 138978908640

• 138978908640 squared (138978908640²) is 19315137046765466649600
• 138978908640 cubed (138978908640³) is 2684396666991497197001725292544000
• The square root of 138978908640 is 372798.7508562763
• The cube root of 138978908640 is 5179.8394508059

Scales and comparisons

• 138,978,908,640 seconds is equal to 4,419 years, 5 weeks, 1 day, 4 hours, 24 minutes.
• To count from 1 to 138,978,908,640 would take you about eight thousand, eight hundred thirty-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 138978908640 cubic inches would be around 431.7 feet tall.

Recreational maths with 138978908640

• 138978908640 backwards is 046809879831
• The number of decimal digits it has is: 12
• The sum of 138978908640's digits is 63
• More coming soon!