139999720

Names of 139999720

• Cardinal: 139999720 can be written as One hundred thirty-nine million, nine hundred ninety-nine thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.3999972 × 10⁸

Factors of 139999720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 172

Divisors of 139999720

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 5 7 8 10 14 20 28 31 35 40 56 62 70 124 127 140 155 217 248 254 280 310 434 508 620 635 868 889 1016 1085 1240 1270 1736 1778 2170 2540 3556 3937 4340 4445 5080 7112 7874 8680 8890 15748 16129 17780 19685 27559 31496 32258 35560 39370 55118 64516 78740 80645 110236 112903 129032 137795 157480 161290 220472 225806 275590 322580 451612 499999 551180 564515 645160 903224 999998 1102360 1129030 1999996 2258060 2499995 3499993 3999992 4516120 4999990 6999986 9999980 13999972 17499965 19999960 27999944 34999930 69999860 139999720
• Sum of all divisors σ(n): 374561280
• Sum of proper divisors (its aliquot sum) s(n): 234561560
• 139999720 is an abundant number, because the sum of its proper divisors (234561560) is greater than itself. Its abundance is 94561840

Bases of 139999720

• Binary: 1000010110000011100111101000₂
• Hexadecimal: 0x85839E8
• Base-36: 2BCOH4

Squares and roots of 139999720

• 139999720 squared (139999720²) is 19599921600078400
• 139999720 cubed (139999720³) is 2743983536032927978048000
• The square root of 139999720 is 11832.1477340337
• The cube root of 139999720 is 519.2490640187

Scales and comparisons

• 139,999,720 seconds is equal to 4 years, 23 weeks, 3 days, 8 hours, 48 minutes, 40 seconds.
• To count from 1 to 139,999,720 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 139999720 cubic inches would be around 43.3 feet tall.

Recreational maths with 139999720

• 139999720 backwards is 027999931
• The number of decimal digits it has is: 9
• The sum of 139999720's digits is 49
• More coming soon!