21729022

Names of 21729022

• Cardinal: 21729022 can be written as Twenty-one million, seven hundred twenty-nine thousand and twenty-two.

Scientific notation

• Scientific notation: 2.1729022 × 10⁷

Factors of 21729022

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 11475

Divisors of 21729022

• Number of divisors d(n): 16
• Complete list of divisors:
  1 2 7 14 137 274 959 1918 11329 22658 79303 158606 1552073 3104146 10864511 21729022
• Sum of all divisors σ(n): 37524960
• Sum of proper divisors (its aliquot sum) s(n): 15795938
• 21729022 is a deficient number, because the sum of its proper divisors (15795938) is less than itself. Its deficiency is 5933084

Bases of 21729022

• Binary: 1010010111000111011111110₂
• Hexadecimal: 0x14B8EFE
• Base-36: CXQ7Y

Squares and roots of 21729022

• 21729022 squared (21729022²) is 472150397076484
• 21729022 cubed (21729022³) is 10259366365383656518648
• The square root of 21729022 is 4661.4399062949
• The cube root of 21729022 is 279.0487361495

Scales and comparisons

• 21,729,022 seconds is equal to 35 weeks, 6 days, 11 hours, 50 minutes, 22 seconds.
• To count from 1 to 21,729,022 would take you about six 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 21729022 cubic inches would be around 23.3 feet tall.

Recreational maths with 21729022

• 21729022 backwards is 22092712
• The number of decimal digits it has is: 8
• The sum of 21729022's digits is 25
• More coming soon!