21116217

Names of 21116217

• Cardinal: 21116217 can be written as Twenty-one million, one hundred sixteen thousand, two hundred seventeen.

Scientific notation

• Scientific notation: 2.1116217 × 10⁷

Factors of 21116217

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 24319

Divisors of 21116217

• Number of divisors d(n): 8
• Complete list of divisors:
  1 3 293 879 24023 72069 7038739 21116217
• Sum of all divisors σ(n): 28252224
• Sum of proper divisors (its aliquot sum) s(n): 7136007
• 21116217 is a deficient number, because the sum of its proper divisors (7136007) is less than itself. Its deficiency is 13980210

Bases of 21116217

• Binary: 1010000100011010100111001₂
• Hexadecimal: 0x1423539
• Base-36: CKLDL

Squares and roots of 21116217

• 21116217 squared (21116217²) is 445894620391089
• 21116217 cubed (21116217³) is 9415607563310860190313
• The square root of 21116217 is 4595.2385139403
• The cube root of 21116217 is 276.4004243443

Scales and comparisons

• 21,116,217 seconds is equal to 34 weeks, 6 days, 9 hours, 36 minutes, 57 seconds.
• To count from 1 to 21,116,217 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 21116217 cubic inches would be around 23 feet tall.

Recreational maths with 21116217

• 21116217 backwards is 71261112
• The number of decimal digits it has is: 8
• The sum of 21116217's digits is 21
• More coming soon!