21043018

Names of 21043018

• Cardinal: 21043018 can be written as Twenty-one million, forty-three thousand and eighteen.

Scientific notation

• Scientific notation: 2.1043018 × 10⁷

Factors of 21043018

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 25532

Divisors of 21043018

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 419 838 25111 50222 10521509 21043018
• Sum of all divisors σ(n): 31641120
• Sum of proper divisors (its aliquot sum) s(n): 10598102
• 21043018 is a deficient number, because the sum of its proper divisors (10598102) is less than itself. Its deficiency is 10444916

Bases of 21043018

• Binary: 1010000010001011101001010₂
• Hexadecimal: 0x141174A
• Base-36: CJ0WA

Squares and roots of 21043018

• 21043018 squared (21043018²) is 442808606548324
• 21043018 cubed (21043018³) is 9318029478151299801832
• The square root of 21043018 is 4587.2669423089
• The cube root of 21043018 is 276.0806754989

Scales and comparisons

• 21,043,018 seconds is equal to 34 weeks, 5 days, 13 hours, 16 minutes, 58 seconds.
• To count from 1 to 21,043,018 would take you about seven hours!

  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 21043018 cubic inches would be around 23 feet tall.

Recreational maths with 21043018

• 21043018 backwards is 81034012
• The number of decimal digits it has is: 8
• The sum of 21043018's digits is 19
• More coming soon!