20390138

Names of 20390138

• Cardinal: 20390138 can be written as Twenty million, three hundred ninety thousand, one hundred thirty-eight.

Scientific notation

• Scientific notation: 2.0390138 × 10⁷

Factors of 20390138

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 20932

Divisors of 20390138

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 499 998 20431 40862 10195069 20390138
• Sum of all divisors σ(n): 30648000
• Sum of proper divisors (its aliquot sum) s(n): 10257862
• 20390138 is a deficient number, because the sum of its proper divisors (10257862) is less than itself. Its deficiency is 10132276

Bases of 20390138

• Binary: 1001101110010000011111010₂
• Hexadecimal: 0x13720FA
• Base-36: C514Q

Squares and roots of 20390138

• 20390138 squared (20390138²) is 415757727659044
• 20390138 cubed (20390138³) is 8477357441534324108072
• The square root of 20390138 is 4515.5440425269
• The cube root of 20390138 is 273.1954036729

Scales and comparisons

• 20,390,138 seconds is equal to 33 weeks, 4 days, 23 hours, 55 minutes, 38 seconds.
• To count from 1 to 20,390,138 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 20390138 cubic inches would be around 22.8 feet tall.

Recreational maths with 20390138

• 20390138 backwards is 83109302
• The number of decimal digits it has is: 8
• The sum of 20390138's digits is 26
• More coming soon!