21550231

Names of 21550231

• Cardinal: 21550231 can be written as Twenty-one million, five hundred fifty thousand, two hundred thirty-one.

Scientific notation

• Scientific notation: 2.1550231 × 10⁷

Factors of 21550231

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 21550231

Divisors of 21550231

• Number of divisors d(n): 2
• Complete list of divisors:
  1 21550231
• Sum of all divisors σ(n): 21550232
• Sum of proper divisors (its aliquot sum) s(n): 1
• 21550231 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 21550230

Bases of 21550231

• Binary: 1010010001101010010010111₂
• Hexadecimal: 0x148D497
• Base-36: CTW9J

Squares and roots of 21550231

• 21550231 squared (21550231²) is 464412456153361
• 21550231 cubed (21550231³) is 10008195709382300976391
• The square root of 21550231 is 4642.2226357641
• The cube root of 21550231 is 278.2812699385

Scales and comparisons

• 21,550,231 seconds is equal to 35 weeks, 4 days, 10 hours, 10 minutes, 31 seconds.
• To count from 1 to 21,550,231 would take you about three 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 21550231 cubic inches would be around 23.2 feet tall.

Recreational maths with 21550231

• 21550231 backwards is 13205512
• The number of decimal digits it has is: 8
• The sum of 21550231's digits is 19
• More coming soon!