138531405870

Names of 138531405870

• Cardinal: 138531405870 can be written as One hundred thirty-eight billion, five hundred thirty-one million, four hundred five thousand, eight hundred seventy.

Scientific notation

• Scientific notation: 1.3853140587 × 10¹¹

Factors of 138531405870

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 355

Divisors of 138531405870

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 5 6 9 10 11 13 15 18 22 26 27 29 30 33 39 45 54 55 58 59 65 66 78 81 87 90 99 110 117 118 130 135 143 145 162 165 174 177 195 198 233 234 243 261 270 286 290 295 297 319 330 351 354 377 390 405 429 435 466 486 495 522 531 585 590 594 638 649 699 702 715 754 767 783 810 858 870 885 891 957 990 1053 1062 1131 1165 1170 1215 1287 1298 1305 1398 1430 1485 1534 1566 1593 1595 1711 1755 1770 1782 1885 1914 1947 2097 2106 2145 2262 2301 2330 2349 2430 2563 2574 2610 2655 2673 2871 2970 3029 3159 3186 3190 3245 3393 3422 3495 3510 3770 3835 3861 3894 3915 4147 4194 4290 4455 4602 4698 4779 4785 5126 5133 5265 5310 5346 5655 5742 5841 6058 6291 6318 6435 6490 6757 6786 6903 6990 7047 7670 7689 7722 7830 7965 8294 8437 8555 8613 8910 9087 9558 9570 9735 10179 10266 10485 10530 11310 11505 11583 11682 11745 12441 12582 12815 12870 13365 13514 13747 13806 14094 14337 14355 15145 15378 15399 15795 15930 16874 16965 17110 17226 17523 18174 18821 18873 19305 19470 20271 20358 20709 20735 20970 22243 23010 23067 23166 23490 23895 24882 25311 25630 25665 25839 26730 27261 27494 28674 28710 29205 30290 30537 30798 31455 31590 33319 33785 33930 34515 34749 35046 35235 37323 37642 37746 38445 38610 40542 41241 41418 41470 42185 43065 44486 45435 46134 46197 47790 50622 50895 51330 51678 52569 54522 56463 56619 57915 58410 60813 61074 62127 62205 62910 66638 66729 67570 68735 69030 69201 69498 70470 71685 74327 74646 75933 76890 76995 77517 81783 82482 84370 86130 87615 87841 90870 91611 92394 94105 94365 99957 101355 101790 103545 105138 111215 111969 112926 113238 115335 115830 121626 123723 124254 124410 126555 129195 133458 136305 137470 138402 138591 143370 148654 151217 151866 152685 153990 155034 157707 163566 166595 169389 173745 175230 175682 178711 182439 183222 186381 186615 188210 188730 199914 200187 202710 206205 207090 207603 222430 222981 223938 227799 230670 230985 244673 245349 247446 253110 258390 262845 263523 272610 277182 282315 283095 299871 302434 304065 305370 310635 315414 333190 333645 335907 338778 346005 347490 357422 364878 371169 371635 372762 373230 379665 387585 398663 400374 408915 412410 415206 415773 439205 445962 453651 455598 458055 461970 489346 490698 499785 508167 525690 527046 536133 547317 559845 564630 566190 599742 600561 608130 618615 621270 622809 667290 668943 671814 683397 692010 692955 734019 736047 742338 743270 756085 759330 775170 788535 790569 797326 817830 831546 846945 878410 893555 899613 907302 912195 916110 931905 966251 999570 1000935 1007721 1016334 1038015 1072266 1094634 1113507 1114905 1119690 1138995 1195989 1201122 1223365 1226745 1237230 1245618 1317615 1337886 1360953 1366794 1385910 1468038 1472094 1499355 1512170 1524501 1577070 1581138 1608399 1641951 1679535 1693890 1787110 1799226 1801683 1824390 1855845 1863810 1932502 1965821 1993315 2001870 2006829 2015442 2050191 2076030 2078865 2202057 2227014 2229810 2268255 2277990 2371707 2391978 2446730 2453490 2540835 2635230 2680665 2698839 2721906 2736585 2898753 2998710 3002805 3049002 3114045 3216798 3283902 3340521 3344715 3359070 3416985 3587967 3603366 3670095 3680235 3711690 3931642 3952845 3986630 4013658 4082859 4100382 4157730 4385293 4404114 4498065 4536510 4573503 4743414 4825197 4831255 5038605 5081670 5182619 5361330 5397678 5405049 5473170 5567535 5797506 5897463 5979945 6005610 6020487 6228090 6606171 6681042 6689430 6804765 6833970 7115121 7175934 7340190 7360470 7622505 7905690 8041995 8096517 8165718 8209755 8696259 8770586 8996130 9008415 9147006 9650394 9662510 9829105 10034145 10077210 10250955 10365238 10763901 10810098 11010285 11135070 11794926 11858535 11959890 12040974 12248577 13155879 13212342 13494195 13609530 14230242 14475591 14493765 15245010 15547857 16083990 16193034 16419510 16702605 17392518 17692389 17939835 18016830 18061461 19658210 19818513 20068290 20414295 20501910 21345363 21527802 21926465 22020570 22867515 23717070 24125985 24497154 25913095 26088777 26311758 26988390 27025245 28951182 28987530 29487315 30102435 31095714 32291703 33030855 33405210 35384778 35575605 35879670 36122922 36745731 39467637 39637026 40482585 40828590 42690726 43426773 43481295 43852930 45735030 46643571 48251970 51826190 52177554 53077167 53819505 54050490 57008809 58974630 59455539 60204870 61242885 64583406 65779395 66061710 71151210 72377955 73491462 77739285 78266331 78935274 80965170 86853546 86962590 88461945 90307305 93287142 96875109 99092565 106154334 106726815 107639010 114017618 118402911 118911078 122485770 130443885 131558790 139930713 144755910 155478570 156532662 159231501 161458515 171026427 176923890 180614610 183728655 193750218 197338185 198185130 213453630 217133865 233217855 234798993 236805822 260887770 265385835 279861426 285044045 297277695 318463002 322917030 342052854 355208733 367457310 391331655 394676370 419792139 434267730 466435710 469597986 477694503 484375545 513079281 530771670 570088090 592014555 594555390 699653565 710417466 782663310 796157505 839584278 855132135 955389006 968751090 1026158562 1065626199 1173994965 1184029110 1259376417 1399307130 1539237843 1592315010 1710264270 1776043665 2098960695 2131252398 2347989930 2388472515 2518752834 2565396405 3078475686 3552087330 4197921390 4617713529 4776945030 5130792810 5328130995 6296882085 7696189215 9235427058 10656261990 12593764170 13853140587 15392378430 23088567645 27706281174 46177135290 69265702935 138531405870
• Sum of all divisors σ(n): 463630003200
• Sum of proper divisors (its aliquot sum) s(n): 325098597330
• 138531405870 is an abundant number, because the sum of its proper divisors (325098597330) is greater than itself. Its abundance is 186567191460

Bases of 138531405870

• Binary: 10000001000001000111011000000000101110₂
• Hexadecimal: 0x20411D802E
• Base-36: 1RN20SVI

Squares and roots of 138531405870

• 138531405870 squared (138531405870²) is 19190950412318670456900
• 138531405870 cubed (138531405870³) is 2658549340599961584843592242003000
• The square root of 138531405870 is 372198.0734367119
• The cube root of 138531405870 is 5174.2738943439

Scales and comparisons

• 138,531,405,870 seconds is equal to 4,404 years, 45 weeks, 1 day, 18 hours, 4 minutes, 30 seconds.
• To count from 1 to 138,531,405,870 would take you about eight thousand, eight hundred nine 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 138531405870 cubic inches would be around 431.2 feet tall.

Recreational maths with 138531405870

• 138531405870 backwards is 078504135831
• 138531405870 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 138531405870's digits is 45
• More coming soon!