20021563

Names of 20021563

• Cardinal: 20021563 can be written as Twenty million, twenty-one thousand, five hundred sixty-three.

Scientific notation

• Scientific notation: 2.0021563 × 10⁷

Factors of 20021563

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 1177756

Divisors of 20021563

• Number of divisors d(n): 4
• Complete list of divisors:
  1 17 1177739 20021563
• Sum of all divisors σ(n): 21199320
• Sum of proper divisors (its aliquot sum) s(n): 1177757
• 20021563 is a deficient number, because the sum of its proper divisors (1177757) is less than itself. Its deficiency is 18843806

Bases of 20021563

• Binary: 1001100011000000100111011₂
• Hexadecimal: 0x131813B
• Base-36: BX4QJ

Squares and roots of 20021563

• 20021563 squared (20021563²) is 400862984962969
• 20021563 cubed (20021563³) is 8025903507804136500547
• The square root of 20021563 is 4474.5461222339
• The cube root of 20021563 is 271.5392782671

Scales and comparisons

• 20,021,563 seconds is equal to 33 weeks, 17 hours, 32 minutes, 43 seconds.
• To count from 1 to 20,021,563 would take you about forty-nine 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 20021563 cubic inches would be around 22.6 feet tall.

Recreational maths with 20021563

• 20021563 backwards is 36512002
• The number of decimal digits it has is: 8
• The sum of 20021563's digits is 19
• More coming soon!