21226145

Names of 21226145

• Cardinal: 21226145 can be written as Twenty-one million, two hundred twenty-six thousand, one hundred forty-five.

Scientific notation

• Scientific notation: 2.1226145 × 10⁷

Factors of 21226145

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 33559

Divisors of 21226145

• Number of divisors d(n): 8
• Complete list of divisors:
  1 5 127 635 33427 167135 4245229 21226145
• Sum of all divisors σ(n): 25672704
• Sum of proper divisors (its aliquot sum) s(n): 4446559
• 21226145 is a deficient number, because the sum of its proper divisors (4446559) is less than itself. Its deficiency is 16779586

Bases of 21226145

• Binary: 1010000111110001010100001₂
• Hexadecimal: 0x143E2A1
• Base-36: CMY75

Squares and roots of 21226145

• 21226145 squared (21226145²) is 450549231561025
• 21226145 cubed (21226145³) is 9563423318752892998625
• The square root of 21226145 is 4607.1840640461
• The cube root of 21226145 is 276.8792281099

Scales and comparisons

• 21,226,145 seconds is equal to 35 weeks, 16 hours, 9 minutes, 5 seconds.
• To count from 1 to 21,226,145 would take you about four days!

  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 21226145 cubic inches would be around 23.1 feet tall.

Recreational maths with 21226145

• 21226145 backwards is 54162212
• The number of decimal digits it has is: 8
• The sum of 21226145's digits is 23
• More coming soon!