20390947

Names of 20390947

• Cardinal: 20390947 can be written as Twenty million, three hundred ninety thousand, nine hundred forty-seven.

Scientific notation

• Scientific notation: 2.0390947 × 10⁷

Factors of 20390947

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 20390947

Divisors of 20390947

• Number of divisors d(n): 2
• Complete list of divisors:
  1 20390947
• Sum of all divisors σ(n): 20390948
• Sum of proper divisors (its aliquot sum) s(n): 1
• 20390947 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 20390946

Bases of 20390947

• Binary: 1001101110010010000100011₂
• Hexadecimal: 0x1372423
• Base-36: C51R7

Squares and roots of 20390947

• 20390947 squared (20390947²) is 415790719556809
• 20390947 cubed (20390947³) is 8478366525574755808123
• The square root of 20390947 is 4515.6336210991
• The cube root of 20390947 is 273.1990167293

Scales and comparisons

• 20,390,947 seconds is equal to 33 weeks, 5 days, 9 minutes, 7 seconds.
• To count from 1 to 20,390,947 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 20390947 cubic inches would be around 22.8 feet tall.

Recreational maths with 20390947

• 20390947 backwards is 74909302
• The number of decimal digits it has is: 8
• The sum of 20390947's digits is 34
• More coming soon!