21000822

Names of 21000822

• Cardinal: 21000822 can be written as Twenty-one million, eight hundred twenty-two.

Scientific notation

• Scientific notation: 2.1000822 × 10⁷

Factors of 21000822

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 74523

Divisors of 21000822

• Number of divisors d(n): 16
• Complete list of divisors:
  1 2 3 6 47 94 141 282 74471 148942 223413 446826 3500137 7000274 10500411 21000822
• Sum of all divisors σ(n): 42895872
• Sum of proper divisors (its aliquot sum) s(n): 21895050
• 21000822 is an abundant number, because the sum of its proper divisors (21895050) is greater than itself. Its abundance is 894228

Bases of 21000822

• Binary: 1010000000111001001110110₂
• Hexadecimal: 0x1407276
• Base-36: CI4C6

Squares and roots of 21000822

• 21000822 squared (21000822²) is 441034524675684
• 21000822 cubed (21000822³) is 9262087548568647412248
• The square root of 21000822 is 4582.6653816311
• The cube root of 21000822 is 275.8960173303

Scales and comparisons

• 21,000,822 seconds is equal to 34 weeks, 5 days, 1 hour, 33 minutes, 42 seconds.
• To count from 1 to 21,000,822 would take you about fourteen 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 21000822 cubic inches would be around 23 feet tall.

Recreational maths with 21000822

• 21000822 backwards is 22800012
• The number of decimal digits it has is: 8
• The sum of 21000822's digits is 15
• More coming soon!