138687648

Names of 138687648

• Cardinal: 138687648 can be written as One hundred thirty-eight million, six hundred eighty-seven thousand, six hundred forty-eight.

Scientific notation

• Scientific notation: 1.38687648 × 10⁸

Factors of 138687648

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2230

Divisors of 138687648

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 8 11 12 16 22 24 32 33 44 48 61 66 88 96 122 132 176 183 244 264 352 366 488 528 671 732 976 1056 1342 1464 1952 2013 2153 2684 2928 4026 4306 5368 5856 6459 8052 8612 10736 12918 16104 17224 21472 23683 25836 32208 34448 47366 51672 64416 68896 71049 94732 103344 131333 142098 189464 206688 262666 284196 378928 393999 525332 568392 757856 787998 1050664 1136784 1444663 1575996 2101328 2273568 2889326 3151992 4202656 4333989 5778652 6303984 8667978 11557304 12607968 17335956 23114608 34671912 46229216 69343824 138687648
• Sum of all divisors σ(n): 403849152
• Sum of proper divisors (its aliquot sum) s(n): 265161504
• 138687648 is an abundant number, because the sum of its proper divisors (265161504) is greater than itself. Its abundance is 126473856

Bases of 138687648

• Binary: 1000010001000011010010100000₂
• Hexadecimal: 0x84434A0
• Base-36: 2AKK2O

Squares and roots of 138687648

• 138687648 squared (138687648²) is 19234263707771904
• 138687648 cubed (138687648³) is 2667554794642644686241792
• The square root of 138687648 is 11776.5719969777
• The cube root of 138687648 is 517.6218425327

Scales and comparisons

• 138,687,648 seconds is equal to 4 years, 21 weeks, 2 days, 4 hours, 20 minutes, 48 seconds.
• To count from 1 to 138,687,648 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 138687648 cubic inches would be around 43.1 feet tall.

Recreational maths with 138687648

• 138687648 backwards is 846786831
• The number of decimal digits it has is: 9
• The sum of 138687648's digits is 51
• More coming soon!