12681728

Names of 12681728

• Cardinal: 12681728 can be written as Twelve million, six hundred eighty-one thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 1.2681728 × 10⁷

Factors of 12681728

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 97

Divisors of 12681728

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 8 16 17 31 32 34 47 62 64 68 94 124 128 136 188 248 256 272 376 496 512 527 544 752 799 992 1054 1088 1457 1504 1598 1984 2108 2176 2914 3008 3196 3968 4216 4352 5828 6016 6392 7936 8432 8704 11656 12032 12784 15872 16864 23312 24064 24769 25568 33728 46624 49538 51136 67456 93248 99076 102272 134912 186496 198152 204544 269824 372992 396304 409088 745984 792608 1585216 3170432 6340864 12681728
• Sum of all divisors σ(n): 28283904
• Sum of proper divisors (its aliquot sum) s(n): 15602176
• 12681728 is an abundant number, because the sum of its proper divisors (15602176) is greater than itself. Its abundance is 2920448

Bases of 12681728

• Binary: 110000011000001000000000₂
• Hexadecimal: 0xC18200
• Base-36: 7JTA8

Squares and roots of 12681728

• 12681728 squared (12681728²) is 160826225065984
• 12681728 cubed (12681728³) is 2039554441553591140352
• The square root of 12681728 is 3561.1413900603
• The cube root of 12681728 is 233.1987105523

Scales and comparisons

• 12,681,728 seconds is equal to 20 weeks, 6 days, 18 hours, 42 minutes, 8 seconds.
• To count from 1 to 12,681,728 would take you about thirty-one weeks!

  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 12681728 cubic inches would be around 19.4 feet tall.

Recreational maths with 12681728

• 12681728 backwards is 82718621
• The number of decimal digits it has is: 8
• The sum of 12681728's digits is 35
• More coming soon!