21089521

Names of 21089521

• Cardinal: 21089521 can be written as Twenty-one million, eighty-nine thousand, five hundred twenty-one.

Scientific notation

• Scientific notation: 2.1089521 × 10⁷

Factors of 21089521

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 21089521

Divisors of 21089521

• Number of divisors d(n): 2
• Complete list of divisors:
  1 21089521
• Sum of all divisors σ(n): 21089522
• Sum of proper divisors (its aliquot sum) s(n): 1
• 21089521 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 21089520

Bases of 21089521

• Binary: 1010000011100110011110001₂
• Hexadecimal: 0x141CCF1
• Base-36: CK0S1

Squares and roots of 21089521

• 21089521 squared (21089521²) is 444767896009441
• 21089521 cubed (21089521³) is 9379941883016922167761
• The square root of 21089521 is 4592.3328494351
• The cube root of 21089521 is 276.2838962521

Scales and comparisons

• 21,089,521 seconds is equal to 34 weeks, 6 days, 2 hours, 12 minutes, 1 second.
• To count from 1 to 21,089,521 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 21089521 cubic inches would be around 23 feet tall.

Recreational maths with 21089521

• 21089521 backwards is 12598012
• The number of decimal digits it has is: 8
• The sum of 21089521's digits is 28
• More coming soon!