28102729

Names of 28102729

• Cardinal: 28102729 can be written as Twenty-eight million, one hundred two thousand, seven hundred twenty-nine.

Scientific notation

• Scientific notation: 2.8102729 × 10⁷

Factors of 28102729

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 16727

Divisors of 28102729

• Number of divisors d(n): 8
• Complete list of divisors:
  1 19 89 1691 16619 315761 1479091 28102729
• Sum of all divisors σ(n): 29916000
• Sum of proper divisors (its aliquot sum) s(n): 1813271
• 28102729 is a deficient number, because the sum of its proper divisors (1813271) is less than itself. Its deficiency is 26289458

Bases of 28102729

• Binary: 1101011001101000001001001₂
• Hexadecimal: 0x1ACD049
• Base-36: GQC7D

Squares and roots of 28102729

• 28102729 squared (28102729²) is 789763377247441
• 28102729 cubed (28102729³) is 22194506164909600366489
• The square root of 28102729 is 5301.2007130461
• The cube root of 28102729 is 304.0298079325

Scales and comparisons

• 28,102,729 seconds is equal to 46 weeks, 3 days, 6 hours, 18 minutes, 49 seconds.
• To count from 1 to 28,102,729 would take you about seventeen 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 28102729 cubic inches would be around 25.3 feet tall.

Recreational maths with 28102729

• 28102729 backwards is 92720182
• The number of decimal digits it has is: 8
• The sum of 28102729's digits is 31
• More coming soon!