138988695447

Names of 138988695447

• Cardinal: 138988695447 can be written as One hundred thirty-eight billion, nine hundred eighty-eight million, six hundred ninety-five thousand, four hundred forty-seven.

Scientific notation

• Scientific notation: 1.38988695447 × 10¹¹

Factors of 138988695447

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 3390

Divisors of 138988695447

• Number of divisors d(n): 48
• Complete list of divisors:
  1 3 7 9 21 27 63 67 189 201 469 603 1407 1809 3313 4221 9939 12663 23191 29817 69573 89451 208719 221971 626157 665913 1553797 1997739 4661391 5993217 10975969 13984173 32927907 41952519 76831783 98783721 230495349 296351163 691486047 735389923 2074458141 2206169769 5147729461 6618509307 15443188383 19855527921 46329565149 138988695447
• Sum of all divisors σ(n): 238909198080
• Sum of proper divisors (its aliquot sum) s(n): 99920502633
• 138988695447 is a deficient number, because the sum of its proper divisors (99920502633) is less than itself. Its deficiency is 39068192814

Bases of 138988695447

• Binary: 10000001011100010111110010111110010111₂
• Hexadecimal: 0x205C5F2F97
• Base-36: 1RUMA3RR

Squares and roots of 138988695447

• 138988695447 squared (138988695447²) is 19317857462058918529809
• 138988695447 cubed (138988695447³) is 2684963807482663385109808092079623
• The square root of 138988695447 is 372811.8767515325
• The cube root of 138988695447 is 5179.9610349603

Scales and comparisons

• 138,988,695,447 seconds is equal to 4,419 years, 21 weeks, 2 days, 10 hours, 57 minutes, 27 seconds.
• To count from 1 to 138,988,695,447 would take you about eight thousand, eight hundred thirty-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 138988695447 cubic inches would be around 431.7 feet tall.

Recreational maths with 138988695447

• 138988695447 backwards is 744596889831
• The number of decimal digits it has is: 12
• The sum of 138988695447's digits is 72
• More coming soon!