12728816

Names of 12728816

• Cardinal: 12728816 can be written as Twelve million, seven hundred twenty-eight thousand, eight hundred sixteen.

Scientific notation

• Scientific notation: 1.2728816 × 10⁷

Factors of 12728816

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 795553

Divisors of 12728816

• Number of divisors d(n): 10
• Complete list of divisors:
  1 2 4 8 16 795551 1591102 3182204 6364408 12728816
• Sum of all divisors σ(n): 24662112
• Sum of proper divisors (its aliquot sum) s(n): 11933296
• 12728816 is a deficient number, because the sum of its proper divisors (11933296) is less than itself. Its deficiency is 795520

Bases of 12728816

• Binary: 110000100011100111110000₂
• Hexadecimal: 0xC239F0
• Base-36: 7KTM8

Squares and roots of 12728816

• 12728816 squared (12728816²) is 162022756761856
• 12728816 cubed (12728816³) is 2062357858634420842496
• The square root of 12728816 is 3567.7466277751
• The cube root of 12728816 is 233.4869808887

Scales and comparisons

• 12,728,816 seconds is equal to 21 weeks, 7 hours, 46 minutes, 56 seconds.
• To count from 1 to 12,728,816 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 12728816 cubic inches would be around 19.5 feet tall.

Recreational maths with 12728816

• 12728816 backwards is 61882721
• The number of decimal digits it has is: 8
• The sum of 12728816's digits is 35
• More coming soon!