138688517792

Names of 138688517792

• Cardinal: 138688517792 can be written as One hundred thirty-eight billion, six hundred eighty-eight million, five hundred seventeen thousand, seven hundred ninety-two.

Scientific notation

• Scientific notation: 1.38688517792 × 10¹¹

Factors of 138688517792

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 3825373

Divisors of 138688517792

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 4 8 11 16 22 32 44 88 103 176 206 352 412 824 1133 1648 2266 3296 4532 9064 18128 36256 3825257 7650514 15301028 30602056 42077827 61204112 84155654 122408224 168311308 336622616 394001471 673245232 788002942 1346490464 1576005884 3152011768 4334016181 6304023536 8668032362 12608047072 17336064724 34672129448 69344258896 138688517792
• Sum of all divisors σ(n): 300757084992
• Sum of proper divisors (its aliquot sum) s(n): 162068567200
• 138688517792 is an abundant number, because the sum of its proper divisors (162068567200) is greater than itself. Its abundance is 23380049408

Bases of 138688517792

• Binary: 10000001001010011110101101011010100000₂
• Hexadecimal: 0x204A7AD6A0
• Base-36: 1RPNK97K

Squares and roots of 138688517792

• 138688517792 squared (138688517792²) is 19234504967341900555264
• 138688517792 cubed (138688517792³) is 2667604984383509554105825943257088
• The square root of 138688517792 is 372409.0731869995
• The cube root of 138688517792 is 5176.2292463443

Scales and comparisons

• 138,688,517,792 seconds is equal to 4,409 years, 45 weeks, 4 hours, 16 minutes, 32 seconds.
• To count from 1 to 138,688,517,792 would take you about eight thousand, eight hundred nineteen 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 138688517792 cubic inches would be around 431.4 feet tall.

Recreational maths with 138688517792

• 138688517792 backwards is 297715886831
• The number of decimal digits it has is: 12
• The sum of 138688517792's digits is 65
• More coming soon!