21426221

Names of 21426221

• Cardinal: 21426221 can be written as Twenty-one million, four hundred twenty-six thousand, two hundred twenty-one.

Scientific notation

• Scientific notation: 2.1426221 × 10⁷

Factors of 21426221

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 21426221

Divisors of 21426221

• Number of divisors d(n): 2
• Complete list of divisors:
  1 21426221
• Sum of all divisors σ(n): 21426222
• Sum of proper divisors (its aliquot sum) s(n): 1
• 21426221 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 21426220

Bases of 21426221

• Binary: 1010001101111000000101101₂
• Hexadecimal: 0x146F02D
• Base-36: CR8KT

Squares and roots of 21426221

• 21426221 squared (21426221²) is 459082946340841
• 21426221 cubed (21426221³) is 9836412665630000591861
• The square root of 21426221 is 4628.8466165989
• The cube root of 21426221 is 277.7464563737

Scales and comparisons

• 21,426,221 seconds is equal to 35 weeks, 2 days, 23 hours, 43 minutes, 41 seconds.
• To count from 1 to 21,426,221 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 21426221 cubic inches would be around 23.1 feet tall.

Recreational maths with 21426221

• 21426221 backwards is 12262412
• The number of decimal digits it has is: 8
• The sum of 21426221's digits is 20
• More coming soon!