21132906

Names of 21132906

• Cardinal: 21132906 can be written as Twenty-one million, one hundred thirty-two thousand, nine hundred six.

Scientific notation

• Scientific notation: 2.1132906 × 10⁷

Factors of 21132906

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 153165

Divisors of 21132906

• Number of divisors d(n): 16
• Complete list of divisors:
  1 2 3 6 23 46 69 138 153137 306274 459411 918822 3522151 7044302 10566453 21132906
• Sum of all divisors σ(n): 44103744
• Sum of proper divisors (its aliquot sum) s(n): 22970838
• 21132906 is an abundant number, because the sum of its proper divisors (22970838) is greater than itself. Its abundance is 1837932

Bases of 21132906

• Binary: 1010000100111011001101010₂
• Hexadecimal: 0x142766A
• Base-36: CKY96

Squares and roots of 21132906

• 21132906 squared (21132906²) is 446599716004836
• 21132906 cubed (21132906³) is 9437949817956894733416
• The square root of 21132906 is 4597.0540566759
• The cube root of 21132906 is 276.4732219793

Scales and comparisons

• 21,132,906 seconds is equal to 34 weeks, 6 days, 14 hours, 15 minutes, 6 seconds.
• To count from 1 to 21,132,906 would take you about two 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 21132906 cubic inches would be around 23 feet tall.

Recreational maths with 21132906

• 21132906 backwards is 60923112
• The number of decimal digits it has is: 8
• The sum of 21132906's digits is 24
• More coming soon!