2987728

Names of 2987728

• Cardinal: 2987728 can be written as Two million, nine hundred eighty-seven thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 2.987728 × 10⁶

Factors of 2987728

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 186735

Divisors of 2987728

• Number of divisors d(n): 10
• Complete list of divisors:
  1 2 4 8 16 186733 373466 746932 1493864 2987728
• Sum of all divisors σ(n): 5788754
• Sum of proper divisors (its aliquot sum) s(n): 2801026
• 2987728 is a deficient number, because the sum of its proper divisors (2801026) is less than itself. Its deficiency is 186702

Bases of 2987728

• Binary: 1011011001011011010000₂
• Hexadecimal: 0x2D96D0
• Base-36: 1S1CG

Squares and roots of 2987728

• 2987728 squared (2987728²) is 8926518601984
• 2987728 cubed (2987728³) is 26670009569668452352
• The square root of 2987728 is 1728.5045559673
• The cube root of 2987728 is 144.0280295231

Scales and comparisons

• 2,987,728 seconds is equal to 4 weeks, 6 days, 13 hours, 55 minutes, 28 seconds.
• To count from 1 to 2,987,728 would take you about seven 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 2987728 cubic inches would be around 12 feet tall.

Recreational maths with 2987728

• 2987728 backwards is 8277892
• The number of decimal digits it has is: 7
• The sum of 2987728's digits is 43
• More coming soon!