21426218

Names of 21426218

• Cardinal: 21426218 can be written as Twenty-one million, four hundred twenty-six thousand, two hundred eighteen.

Scientific notation

• Scientific notation: 2.1426218 × 10⁷

Factors of 21426218

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 973932

Divisors of 21426218

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 11 22 973919 1947838 10713109 21426218
• Sum of all divisors σ(n): 35061120
• Sum of proper divisors (its aliquot sum) s(n): 13634902
• 21426218 is a deficient number, because the sum of its proper divisors (13634902) is less than itself. Its deficiency is 7791316

Bases of 21426218

• Binary: 1010001101111000000101010₂
• Hexadecimal: 0x146F02A
• Base-36: CR8KQ

Squares and roots of 21426218

• 21426218 squared (21426218²) is 459082817783524
• 21426218 cubed (21426218³) is 9836408533884062032232
• The square root of 21426218 is 4628.8462925443
• The cube root of 21426218 is 277.7464434107

Scales and comparisons

• 21,426,218 seconds is equal to 35 weeks, 2 days, 23 hours, 43 minutes, 38 seconds.
• To count from 1 to 21,426,218 would take you about twenty-three 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 21426218 cubic inches would be around 23.1 feet tall.

Recreational maths with 21426218

• 21426218 backwards is 81262412
• The number of decimal digits it has is: 8
• The sum of 21426218's digits is 26
• More coming soon!