21845342

Names of 21845342

• Cardinal: 21845342 can be written as Twenty-one million, eight hundred forty-five thousand, three hundred forty-two.

Scientific notation

• Scientific notation: 2.1845342 × 10⁷

Factors of 21845342

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 10922673

Divisors of 21845342

• Number of divisors d(n): 4
• Complete list of divisors:
  1 2 10922671 21845342
• Sum of all divisors σ(n): 32768016
• Sum of proper divisors (its aliquot sum) s(n): 10922674
• 21845342 is a deficient number, because the sum of its proper divisors (10922674) is less than itself. Its deficiency is 10922668

Bases of 21845342

• Binary: 1010011010101010101011110₂
• Hexadecimal: 0x14D555E
• Base-36: D07Z2

Squares and roots of 21845342

• 21845342 squared (21845342²) is 477218967096964
• 21845342 cubed (21845342³) is 10425011545119925741688
• The square root of 21845342 is 4673.9000845117
• The cube root of 21845342 is 279.5457856835

Scales and comparisons

• 21,845,342 seconds is equal to 36 weeks, 20 hours, 9 minutes, 2 seconds.
• To count from 1 to 21,845,342 would take you about two 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 21845342 cubic inches would be around 23.3 feet tall.

Recreational maths with 21845342

• 21845342 backwards is 24354812
• The number of decimal digits it has is: 8
• The sum of 21845342's digits is 29
• More coming soon!