139249728

Names of 139249728

• Cardinal: 139249728 can be written as One hundred thirty-nine million, two hundred forty-nine thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 1.39249728 × 10⁸

Factors of 139249728

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 485

Divisors of 139249728

• Number of divisors d(n): 126
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 23 24 32 36 46 48 64 69 72 92 96 138 144 184 192 207 276 288 368 414 457 529 552 576 736 828 914 1058 1104 1371 1472 1587 1656 1828 2116 2208 2742 3174 3312 3656 4113 4232 4416 4761 5484 6348 6624 7312 8226 8464 9522 10511 10968 12696 13248 14624 16452 16928 19044 21022 21936 25392 29248 31533 32904 33856 38088 42044 43872 50784 63066 65808 76176 84088 87744 94599 101568 126132 131616 152352 168176 189198 241753 252264 263232 304704 336352 378396 483506 504528 672704 725259 756792 967012 1009056 1450518 1513584 1934024 2018112 2175777 2901036 3027168 3868048 4351554 5802072 6054336 7736096 8703108 11604144 15472192 17406216 23208288 34812432 46416576 69624864 139249728
• Sum of all divisors σ(n): 418155374
• Sum of proper divisors (its aliquot sum) s(n): 278905646
• 139249728 is an abundant number, because the sum of its proper divisors (278905646) is greater than itself. Its abundance is 139655918

Bases of 139249728

• Binary: 1000010011001100100001000000₂
• Hexadecimal: 0x84CC840
• Base-36: 2AWLS0

Squares and roots of 139249728

• 139249728 squared (139249728²) is 19390486748073984
• 139249728 cubed (139249728³) is 2700120005456906795876352
• The square root of 139249728 is 11800.4121961905
• The cube root of 139249728 is 518.3201808977

Scales and comparisons

• 139,249,728 seconds is equal to 4 years, 22 weeks, 1 day, 16 hours, 28 minutes, 48 seconds.
• To count from 1 to 139,249,728 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 139249728 cubic inches would be around 43.2 feet tall.

Recreational maths with 139249728

• 139249728 backwards is 827942931
• The number of decimal digits it has is: 9
• The sum of 139249728's digits is 45
• More coming soon!