20421523

Names of 20421523

• Cardinal: 20421523 can be written as Twenty million, four hundred twenty-one thousand, five hundred twenty-three.

Scientific notation

• Scientific notation: 2.0421523 × 10⁷

Factors of 20421523

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 5781

Divisors of 20421523

• Number of divisors d(n): 8
• Complete list of divisors:
  1 19 193 3667 5569 105811 1074817 20421523
• Sum of all divisors σ(n): 21611600
• Sum of proper divisors (its aliquot sum) s(n): 1190077
• 20421523 is a deficient number, because the sum of its proper divisors (1190077) is less than itself. Its deficiency is 19231446

Bases of 20421523

• Binary: 1001101111001101110010011₂
• Hexadecimal: 0x1379B93
• Base-36: C5PCJ

Squares and roots of 20421523

• 20421523 squared (20421523²) is 417038601639529
• 20421523 cubed (20421523³) is 8516563395269479182667
• The square root of 20421523 is 4519.0179242839
• The cube root of 20421523 is 273.3355015029

Scales and comparisons

• 20,421,523 seconds is equal to 33 weeks, 5 days, 8 hours, 38 minutes, 43 seconds.
• To count from 1 to 20,421,523 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 20421523 cubic inches would be around 22.8 feet tall.

Recreational maths with 20421523

• 20421523 backwards is 32512402
• 20421523 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 20421523's digits is 19
• More coming soon!