20830721

Names of 20830721

• Cardinal: 20830721 can be written as Twenty million, eight hundred thirty thousand, seven hundred twenty-one.

Scientific notation

• Scientific notation: 2.0830721 × 10⁷

Factors of 20830721

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 20830721

Divisors of 20830721

• Number of divisors d(n): 2
• Complete list of divisors:
  1 20830721
• Sum of all divisors σ(n): 20830722
• Sum of proper divisors (its aliquot sum) s(n): 1
• 20830721 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 20830720

Bases of 20830721

• Binary: 1001111011101101000000001₂
• Hexadecimal: 0x13DDA01
• Base-36: CEH35

Squares and roots of 20830721

• 20830721 squared (20830721²) is 433918937379841
• 20830721 cubed (20830721³) is 9038844321175938895361
• The square root of 20830721 is 4564.0684701263
• The cube root of 20830721 is 275.1491026143

Scales and comparisons

• 20,830,721 seconds is equal to 34 weeks, 3 days, 2 hours, 18 minutes, 41 seconds.
• To count from 1 to 20,830,721 would take you about fifty-one 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 20830721 cubic inches would be around 22.9 feet tall.

Recreational maths with 20830721

• 20830721 backwards is 12703802
• The number of decimal digits it has is: 8
• The sum of 20830721's digits is 23
• More coming soon!