21050745

Names of 21050745

• Cardinal: 21050745 can be written as Twenty-one million, fifty thousand, seven hundred forty-five.

Scientific notation

• Scientific notation: 2.1050745 × 10⁷

Factors of 21050745

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 1403391

Divisors of 21050745

• Number of divisors d(n): 8
• Complete list of divisors:
  1 3 5 15 1403383 4210149 7016915 21050745
• Sum of all divisors σ(n): 33681216
• Sum of proper divisors (its aliquot sum) s(n): 12630471
• 21050745 is a deficient number, because the sum of its proper divisors (12630471) is less than itself. Its deficiency is 8420274

Bases of 21050745

• Binary: 1010000010011010101111001₂
• Hexadecimal: 0x1413579
• Base-36: CJ6UX

Squares and roots of 21050745

• 21050745 squared (21050745²) is 443133865055025
• 21050745 cubed (21050745³) is 9328297994137742243625
• The square root of 21050745 is 4588.1090876307
• The cube root of 21050745 is 276.1144636547

Scales and comparisons

• 21,050,745 seconds is equal to 34 weeks, 5 days, 15 hours, 25 minutes, 45 seconds.
• To count from 1 to 21,050,745 would take you about eleven 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 21050745 cubic inches would be around 23 feet tall.

Recreational maths with 21050745

• 21050745 backwards is 54705012
• The number of decimal digits it has is: 8
• The sum of 21050745's digits is 24
• More coming soon!