28813889

Names of 28813889

• Cardinal: 28813889 can be written as Twenty-eight million, eight hundred thirteen thousand, eight hundred eighty-nine.

Scientific notation

• Scientific notation: 2.8813889 × 10⁷

Factors of 28813889

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 37639

Divisors of 28813889

• Number of divisors d(n): 8
• Complete list of divisors:
  1 13 59 767 37567 488371 2216453 28813889
• Sum of all divisors σ(n): 31557120
• Sum of proper divisors (its aliquot sum) s(n): 2743231
• 28813889 is a deficient number, because the sum of its proper divisors (2743231) is less than itself. Its deficiency is 26070658

Bases of 28813889

• Binary: 1101101111010101001000001₂
• Hexadecimal: 0x1B7AA41
• Base-36: H5KXT

Squares and roots of 28813889

• 28813889 squared (28813889²) is 830240199304321
• 28813889 cubed (28813889³) is 23922448946092582514369
• The square root of 28813889 is 5367.8570211957
• The cube root of 28813889 is 306.5730394447

Scales and comparisons

• 28,813,889 seconds is equal to 47 weeks, 4 days, 11 hours, 51 minutes, 29 seconds.
• To count from 1 to 28,813,889 would take you about nineteen 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 28813889 cubic inches would be around 25.5 feet tall.

Recreational maths with 28813889

• 28813889 backwards is 98831882
• The number of decimal digits it has is: 8
• The sum of 28813889's digits is 47
• More coming soon!