138131715840

Names of 138131715840

• Cardinal: 138131715840 can be written as One hundred thirty-eight billion, one hundred thirty-one million, seven hundred fifteen thousand, eight hundred forty.

Scientific notation

• Scientific notation: 1.3813171584 × 10¹¹

Factors of 138131715840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 877412

Divisors of 138131715840

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 41 48 60 64 80 82 96 120 123 128 160 164 192 205 240 246 256 320 328 384 410 480 492 615 640 656 768 820 960 984 1230 1280 1312 1640 1920 1968 2460 2624 3280 3840 3936 4920 5248 6560 7872 9840 10496 13120 15744 19680 26240 31488 39360 52480 78720 157440 877361 1754722 2632083 3509444 4386805 5264166 7018888 8773610 10528332 13160415 14037776 17547220 21056664 26320830 28075552 35094440 35971801 42113328 52641660 56151104 70188880 71943602 84226656 105283320 107915403 112302208 140377760 143887204 168453312 179859005 210566640 215830806 224604416 280755520 287774408 336906624 359718010 421133280 431661612 539577015 561511040 575548816 673813248 719436020 842266560 863323224 1079154030 1123022080 1151097632 1438872040 1684533120 1726646448 2158308060 2302195264 2877744080 3369066240 3453292896 4316616120 4604390528 5755488160 6906585792 8633232240 9208781056 11510976320 13813171584 17266464480 23021952640 27626343168 34532928960 46043905280 69065857920 138131715840
• Sum of all divisors σ(n): 451918637856
• Sum of proper divisors (its aliquot sum) s(n): 313786922016
• 138131715840 is an abundant number, because the sum of its proper divisors (313786922016) is greater than itself. Its abundance is 175655206176

Bases of 138131715840

• Binary: 10000000101001010010101011011100000000₂
• Hexadecimal: 0x20294AB700
• Base-36: 1RGG222O

Squares and roots of 138131715840

• 138131715840 squared (138131715840²) is 19080370920902506905600
• 138131715840 cubed (138131715840³) is 2635604374167904200227976904704000
• The square root of 138131715840 is 371660.7536988539
• The cube root of 138131715840 is 5169.2928388893

Scales and comparisons

• 138,131,715,840 seconds is equal to 4,392 years, 8 weeks, 2 days, 17 hours, 4 minutes.
• To count from 1 to 138,131,715,840 would take you about eight thousand, seven hundred eighty-four 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 138131715840 cubic inches would be around 430.8 feet tall.

Recreational maths with 138131715840

• 138131715840 backwards is 048517131831
• The number of decimal digits it has is: 12
• The sum of 138131715840's digits is 42
• More coming soon!