138993855

Names of 138993855

• Cardinal: 138993855 can be written as One hundred thirty-eight million, nine hundred ninety-three thousand, eight hundred fifty-five.

Scientific notation

• Scientific notation: 1.38993855 × 10⁸

Factors of 138993855

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 9296

Divisors of 138993855

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 5 7 11 13 15 21 33 35 39 55 65 77 91 105 143 165 195 231 273 385 429 455 715 1001 1155 1365 2145 3003 5005 9257 15015 27771 46285 64799 101827 120341 138855 194397 305481 323995 361023 509135 601705 712789 842387 971985 1323751 1527405 1805115 2138367 2527161 3563945 3971253 4211935 6618755 9266257 10691835 12635805 19856265 27798771 46331285 138993855
• Sum of all divisors σ(n): 298626048
• Sum of proper divisors (its aliquot sum) s(n): 159632193
• 138993855 is an abundant number, because the sum of its proper divisors (159632193) is greater than itself. Its abundance is 20638338

Bases of 138993855

• Binary: 1000010010001110000010111111₂
• Hexadecimal: 0x848E0BF
• Base-36: 2AR4CF

Squares and roots of 138993855

• 138993855 squared (138993855²) is 19319291727761025
• 138993855 cubed (138993855³) is 2685262833111115383501375
• The square root of 138993855 is 11789.5655136227
• The cube root of 138993855 is 518.0025131187

Scales and comparisons

• 138,993,855 seconds is equal to 4 years, 21 weeks, 5 days, 17 hours, 24 minutes, 15 seconds.
• To count from 1 to 138,993,855 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 138993855 cubic inches would be around 43.2 feet tall.

Recreational maths with 138993855

• 138993855 backwards is 558399831
• The number of decimal digits it has is: 9
• The sum of 138993855's digits is 51
• More coming soon!