138215390105

Names of 138215390105

• Cardinal: 138215390105 can be written as One hundred thirty-eight billion, two hundred fifteen million, three hundred ninety thousand, one hundred five.

Scientific notation

• Scientific notation: 1.38215390105 × 10¹¹

Factors of 138215390105

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 232

Divisors of 138215390105

• Number of divisors d(n): 80
• Complete list of divisors:
  1 5 13 17 65 85 169 197 221 289 845 985 1105 1445 2197 2561 2873 3349 3757 4913 10985 12805 14365 16745 18785 24565 28561 33293 37349 43537 48841 56933 63869 142805 166465 186745 217685 244205 284665 319345 432809 485537 565981 634933 740129 830297 967861 2164045 2427685 2829905 3174665 3700645 4151485 4839305 5626517 7357753 8254129 9621677 10793861 12582193 28132585 36788765 41270645 48108385 53969305 62910965 95650789 125081801 140320193 163568509 478253945 625409005 701600965 817842545 1626063413 2126390617 8130317065 10631953085 27643078021 138215390105
• Sum of all divisors σ(n): 191876279760
• Sum of proper divisors (its aliquot sum) s(n): 53660889655
• 138215390105 is a deficient number, because the sum of its proper divisors (53660889655) is less than itself. Its deficiency is 84554500450

Bases of 138215390105

• Binary: 10000000101110010001110111101110011001₂
• Hexadecimal: 0x202E477B99
• Base-36: 1RHTVHJT

Squares and roots of 138215390105

• 138215390105 squared (138215390105²) is 19103494061877331911025
• 138215390105 cubed (138215390105³) is 2640396884130926438738885525407625
• The square root of 138215390105 is 371773.3047234565
• The cube root of 138215390105 is 5170.3364067819

Scales and comparisons

• 138,215,390,105 seconds is equal to 4,394 years, 42 weeks, 5 days, 3 hours, 55 minutes, 5 seconds.
• To count from 1 to 138,215,390,105 would take you about eight thousand, seven hundred eighty-nine 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 138215390105 cubic inches would be around 430.9 feet tall.

Recreational maths with 138215390105

• 138215390105 backwards is 501093512831
• The number of decimal digits it has is: 12
• The sum of 138215390105's digits is 38
• More coming soon!