21141864

Names of 21141864

• Cardinal: 21141864 can be written as Twenty-one million, one hundred forty-one thousand, eight hundred sixty-four.

Scientific notation

• Scientific notation: 2.1141864 × 10⁷

Factors of 21141864

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 97884

Divisors of 21141864

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 3 4 6 8 9 12 18 24 27 36 54 72 108 216 97879 195758 293637 391516 587274 783032 880911 1174548 1761822 2349096 2642733 3523644 5285466 7047288 10570932 21141864
• Sum of all divisors σ(n): 58728000
• Sum of proper divisors (its aliquot sum) s(n): 37586136
• 21141864 is an abundant number, because the sum of its proper divisors (37586136) is greater than itself. Its abundance is 16444272

Bases of 21141864

• Binary: 1010000101001100101101000₂
• Hexadecimal: 0x1429968
• Base-36: CL560

Squares and roots of 21141864

• 21141864 squared (21141864²) is 446978413394496
• 21141864 cubed (21141864³) is 9449956826922212780544
• The square root of 21141864 is 4598.0282730753
• The cube root of 21141864 is 276.5122810857

Scales and comparisons

• 21,141,864 seconds is equal to 34 weeks, 6 days, 16 hours, 44 minutes, 24 seconds.
• To count from 1 to 21,141,864 would take you about three 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 21141864 cubic inches would be around 23 feet tall.

Recreational maths with 21141864

• 21141864 backwards is 46814112
• 21141864 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21141864's digits is 27
• More coming soon!