138198637520

Names of 138198637520

• Cardinal: 138198637520 can be written as One hundred thirty-eight billion, one hundred ninety-eight million, six hundred thirty-seven thousand, five hundred twenty.

Scientific notation

• Scientific notation: 1.3819863752 × 10¹¹

Factors of 138198637520

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 563

Divisors of 138198637520

• Number of divisors d(n): 90
• Complete list of divisors:
  1 2 4 5 8 10 16 20 40 80 89 178 356 445 467 712 890 934 1424 1780 1868 2335 3560 3736 4670 7120 7472 7921 9340 15842 18680 31684 37360 39605 41563 63368 79210 83126 126736 158420 166252 207815 218089 316840 332504 415630 436178 633680 665008 831260 872356 1090445 1662520 1744712 2180890 3325040 3489424 3699107 4361780 7398214 8723560 14796428 17447120 18495535 19409921 29592856 36991070 38819842 59185712 73982140 77639684 97049605 147964280 155279368 194099210 295928560 310558736 388198420 776396840 1552793680 1727482969 3454965938 6909931876 8637414845 13819863752 17274829690 27639727504 34549659380 69099318760 138198637520
• Sum of all divisors σ(n): 325659983622
• Sum of proper divisors (its aliquot sum) s(n): 187461346102
• 138198637520 is an abundant number, because the sum of its proper divisors (187461346102) is greater than itself. Its abundance is 49262708582

Bases of 138198637520

• Binary: 10000000101101010001111101101111010000₂
• Hexadecimal: 0x202D47DBD0
• Base-36: 1RHJWF68

Squares and roots of 138198637520

• 138198637520 squared (138198637520²) is 19098863412384351750400
• 138198637520 cubed (138198637520³) is 2639436901772095306473707115008000
• The square root of 138198637520 is 371750.7733952951
• The cube root of 138198637520 is 5170.1275057813

Scales and comparisons

• 138,198,637,520 seconds is equal to 4,394 years, 15 weeks, 6 hours, 25 minutes, 20 seconds.
• To count from 1 to 138,198,637,520 would take you about eight thousand, seven hundred eighty-eight 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 138198637520 cubic inches would be around 430.8 feet tall.

Recreational maths with 138198637520

• 138198637520 backwards is 025736891831
• The number of decimal digits it has is: 12
• The sum of 138198637520's digits is 53
• More coming soon!