138138959840

Names of 138138959840

• Cardinal: 138138959840 can be written as One hundred thirty-eight billion, one hundred thirty-eight million, nine hundred fifty-nine thousand, eight hundred forty.

Scientific notation

• Scientific notation: 1.3813895984 × 10¹¹

Factors of 138138959840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1840952

Divisors of 138138959840

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 67 70 80 112 134 140 160 224 268 280 335 469 536 560 670 938 1072 1120 1340 1876 2144 2345 2680 3752 4690 5360 7504 9380 10720 15008 18760 37520 75040 1840871 3681742 7363484 9204355 12886097 14726968 18408710 25772194 29453936 36817420 51544388 58907872 64430485 73634840 103088776 123338357 128860970 147269680 206177552 246676714 257721940 294539360 412355104 493353428 515443880 616691785 863368499 986706856 1030887760 1233383570 1726736998 1973413712 2061775520 2466767140 3453473996 3946827424 4316842495 4933534280 6906947992 8633684990 9867068560 13813895984 17267369980 19734137120 27627791968 34534739960 69069479920 138138959840
• Sum of all divisors σ(n): 378542191104
• Sum of proper divisors (its aliquot sum) s(n): 240403231264
• 138138959840 is an abundant number, because the sum of its proper divisors (240403231264) is greater than itself. Its abundance is 102264271424

Bases of 138138959840

• Binary: 10000000101001101110010011111111100000₂
• Hexadecimal: 0x2029B93FE0
• Base-36: 1RGKDBKW

Squares and roots of 138138959840

• 138138959840 squared (138138959840²) is 19082372225677132825600
• 138138959840 cubed (138138959840³) is 2636019050534744868201904123904000
• The square root of 138138959840 is 371670.4990176111
• The cube root of 138138959840 is 5169.3832011991

Scales and comparisons

• 138,138,959,840 seconds is equal to 4,392 years, 20 weeks, 2 days, 13 hours, 17 minutes, 20 seconds.
• To count from 1 to 138,138,959,840 would take you about eight thousand, seven hundred eighty-four 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 138138959840 cubic inches would be around 430.8 feet tall.

Recreational maths with 138138959840

• 138138959840 backwards is 048959831831
• The number of decimal digits it has is: 12
• The sum of 138138959840's digits is 59
• More coming soon!