20490728

Names of 20490728

• Cardinal: 20490728 can be written as Twenty million, four hundred ninety thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 2.0490728 × 10⁷

Factors of 20490728

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 2561343

Divisors of 20490728

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 4 8 2561341 5122682 10245364 20490728
• Sum of all divisors σ(n): 38420130
• Sum of proper divisors (its aliquot sum) s(n): 17929402
• 20490728 is a deficient number, because the sum of its proper divisors (17929402) is less than itself. Its deficiency is 2561326

Bases of 20490728

• Binary: 1001110001010100111101000₂
• Hexadecimal: 0x138A9E8
• Base-36: C76QW

Squares and roots of 20490728

• 20490728 squared (20490728²) is 419869933969984
• 20490728 cubed (20490728³) is 8603440612356902308352
• The square root of 20490728 is 4526.6685321547
• The cube root of 20490728 is 273.6439155823

Scales and comparisons

• 20,490,728 seconds is equal to 33 weeks, 6 days, 3 hours, 52 minutes, 8 seconds.
• To count from 1 to 20,490,728 would take you about fifty 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 20490728 cubic inches would be around 22.8 feet tall.

Recreational maths with 20490728

• 20490728 backwards is 82709402
• The number of decimal digits it has is: 8
• The sum of 20490728's digits is 32
• More coming soon!