138561072390

Names of 138561072390

• Cardinal: 138561072390 can be written as One hundred thirty-eight billion, five hundred sixty-one million, seventy-two thousand, three hundred ninety.

Scientific notation

• Scientific notation: 1.3856107239 × 10¹¹

Factors of 138561072390

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 187

Divisors of 138561072390

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 5 6 9 10 13 15 18 26 27 30 39 45 54 61 65 78 90 103 117 122 130 135 183 195 206 234 270 305 309 351 366 390 515 549 585 610 618 702 793 915 927 1030 1098 1170 1339 1545 1586 1647 1755 1830 1854 2379 2678 2745 2781 3090 3294 3510 3721 3965 4017 4635 4758 5490 5562 6283 6695 7137 7442 7930 8034 8235 9270 10609 11163 11895 12051 12566 13390 13905 14274 16470 18605 18849 20085 21218 21411 22326 23790 24102 27810 31415 31827 33489 35685 36153 37210 37698 40170 42822 48373 53045 55815 56547 60255 62830 63654 66978 71370 72306 81679 94245 95481 96746 100467 106090 107055 111630 113094 120510 137917 145119 159135 163358 167445 169641 180765 188490 190962 200934 214110 241865 245037 275834 282735 286443 290238 318270 334890 339282 361530 383263 408395 413751 435357 477405 483730 490074 502335 565470 572886 647149 689585 725595 735111 766526 816790 827502 848205 870714 954810 1004670 1149789 1225185 1241253 1294298 1306071 1379170 1432215 1451190 1470222 1696410 1916315 1941447 2068755 2176785 2205333 2299578 2450370 2482506 2612142 2864430 3235745 3449367 3675555 3723759 3832630 3882894 4137510 4353570 4410666 4982419 5748945 5824341 6206265 6471490 6530355 6898734 7351110 7447518 8412937 9707235 9964838 10348101 11026665 11497890 11648682 12412530 13060710 14947257 16825874 17246835 17473023 18618795 19414470 20696202 22053330 24912095 25238811 29121705 29894514 34493670 34946046 37237590 39476089 42064685 44841771 49824190 50477622 51740505 58243410 74736285 75716433 78952178 84129370 87365115 89683542 103481010 118428267 126194055 134525313 149472570 151432866 174730230 197380445 224208855 227149299 236856534 252388110 269050626 355284801 378582165 394760890 448417710 454298598 513189157 592141335 672626565 710569602 757164330 1026378314 1065854403 1135746495 1184282670 1345253130 1539567471 1776424005 2131708806 2271492990 2565945785 3079134942 3552848010 4618702413 5131891570 5329272015 7697837355 9237404826 10658544030 13856107239 15395674710 23093512065 27712214478 46187024130 69280536195 138561072390
• Sum of all divisors σ(n): 408514972320
• Sum of proper divisors (its aliquot sum) s(n): 269953899930
• 138561072390 is an abundant number, because the sum of its proper divisors (269953899930) is greater than itself. Its abundance is 131392827540

Bases of 138561072390

• Binary: 10000001000010111000100010110100000110₂
• Hexadecimal: 0x2042E22D06
• Base-36: 1RNJONPI

Squares and roots of 138561072390

• 138561072390 squared (138561072390²) is 19199170781866820312100
• 138561072390 cubed (138561072390³) is 2660257692534221388604010492919000
• The square root of 138561072390 is 372237.9244381207
• The cube root of 138561072390 is 5174.6432251413

Scales and comparisons

• 138,561,072,390 seconds is equal to 4,405 years, 42 weeks, 2 days, 2 hours, 46 minutes, 30 seconds.
• To count from 1 to 138,561,072,390 would take you about eight thousand, eight hundred eleven 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 138561072390 cubic inches would be around 431.2 feet tall.

Recreational maths with 138561072390

• 138561072390 backwards is 093270165831
• 138561072390 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 138561072390's digits is 45
• More coming soon!