138806460

Names of 138806460

• Cardinal: 138806460 can be written as One hundred thirty-eight million, eight hundred six thousand, four hundred sixty.

Scientific notation

• Scientific notation: 1.3880646 × 10⁸

Factors of 138806460

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 23

Divisors of 138806460

• Number of divisors d(n): 180
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 13 15 18 20 26 27 30 36 39 45 52 54 60 65 78 81 90 108 117 130 135 156 162 169 180 195 234 243 260 270 324 338 351 390 405 468 486 507 540 585 676 702 780 810 845 972 1014 1053 1170 1215 1404 1521 1620 1690 1755 2028 2106 2197 2340 2430 2535 3042 3159 3380 3510 4212 4394 4563 4860 5070 5265 6084 6318 6591 7020 7605 8788 9126 10140 10530 10985 12636 13182 13689 15210 15795 18252 19773 21060 21970 22815 26364 27378 28561 30420 31590 32955 39546 41067 43940 45630 54756 57122 59319 63180 65910 68445 79092 82134 85683 91260 98865 114244 118638 131820 136890 142805 164268 171366 177957 197730 205335 237276 257049 273780 285610 296595 342732 355914 395460 410670 428415 514098 533871 571220 593190 711828 771147 821340 856830 889785 1028196 1067742 1186380 1285245 1542294 1713660 1779570 2135484 2313441 2570490 2669355 3084588 3559140 3855735 4626882 5140980 5338710 6940323 7711470 9253764 10677420 11567205 13880646 15422940 23134410 27761292 34701615 46268820 69403230 138806460
• Sum of all divisors σ(n): 473026008
• Sum of proper divisors (its aliquot sum) s(n): 334219548
• 138806460 is an abundant number, because the sum of its proper divisors (334219548) is greater than itself. Its abundance is 195413088

Bases of 138806460

• Binary: 1000010001100000010010111100₂
• Hexadecimal: 0x84604BC
• Base-36: 2AN3R0

Squares and roots of 138806460

• 138806460 squared (138806460²) is 19267233337731600
• 138806460 cubed (138806460³) is 2674416453604507826136000
• The square root of 138806460 is 11781.6153391629
• The cube root of 138806460 is 517.7696137621

Scales and comparisons

• 138,806,460 seconds is equal to 4 years, 21 weeks, 3 days, 13 hours, 21 minutes.
• To count from 1 to 138,806,460 would take you about six 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 138806460 cubic inches would be around 43.1 feet tall.

Recreational maths with 138806460

• 138806460 backwards is 064608831
• 138806460 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 138806460's digits is 36
• More coming soon!