138780278940

Names of 138780278940

• Cardinal: 138780278940 can be written as One hundred thirty-eight billion, seven hundred eighty million, two hundred seventy-eight thousand, nine hundred forty.

Scientific notation

• Scientific notation: 1.3878027894 × 10¹¹

Factors of 138780278940

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 77030

Divisors of 138780278940

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 10 12 15 17 20 29 30 34 51 58 60 61 68 85 87 102 116 122 145 170 174 183 204 244 255 290 305 340 348 366 435 493 510 580 610 732 870 915 986 1020 1037 1220 1479 1740 1769 1830 1972 2074 2465 2958 3111 3538 3660 4148 4930 5185 5307 5916 6222 7076 7395 8845 9860 10370 10614 12444 14790 15555 17690 20740 21228 26535 29580 30073 31110 35380 53070 60146 62220 76913 90219 106140 120292 150365 153826 180438 230739 300730 307652 360876 384565 451095 461478 601460 769130 902190 922956 1153695 1307521 1538260 1804380 2230477 2307390 2615042 3922563 4460954 4614780 4691693 5230084 6537605 6691431 7845126 8921908 9383386 11152385 13075210 13382862 14075079 15690252 18766772 19612815 22304770 23458465 26150420 26765724 28150158 33457155 37918109 39225630 44609540 46916930 56300316 66914310 70375395 75836218 78451260 79758781 93833860 113754327 133828620 136059097 140750790 151672436 159517562 189590545 227508654 239276343 272118194 281501580 319035124 379181090 398793905 408177291 455017308 478552686 544236388 568771635 680295485 758362180 797587810 816354582 957105372 1137543270 1196381715 1360590970 1595175620 1632709164 2040886455 2275086540 2313004649 2392763430 2721181940 4081772910 4626009298 4785526860 6939013947 8163545820 9252018596 11565023245 13878027894 23130046490 27756055788 34695069735 46260092980 69390139470 138780278940
• Sum of all divisors σ(n): 432613560960
• Sum of proper divisors (its aliquot sum) s(n): 293833282020
• 138780278940 is an abundant number, because the sum of its proper divisors (293833282020) is greater than itself. Its abundance is 155053003080

Bases of 138780278940

• Binary: 10000001001111111100110000000010011100₂
• Hexadecimal: 0x204FF3009C
• Base-36: 1RR670KC

Squares and roots of 138780278940

• 138780278940 squared (138780278940²) is 19259965822664207523600
• 138780278940 cubed (138780278940³) is 2672903429244205294079254632984000
• The square root of 138780278940 is 372532.2522144895
• The cube root of 138780278940 is 5177.3705857773

Scales and comparisons

• 138,780,278,940 seconds is equal to 4,412 years, 40 weeks, 5 days, 5 hours, 29 minutes.
• To count from 1 to 138,780,278,940 would take you about eight thousand, eight hundred twenty-five 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 138780278940 cubic inches would be around 431.4 feet tall.

Recreational maths with 138780278940

• 138780278940 backwards is 049872087831
• The number of decimal digits it has is: 12
• The sum of 138780278940's digits is 57
• More coming soon!