21224161

Names of 21224161

• Cardinal: 21224161 can be written as Twenty-one million, two hundred twenty-four thousand, one hundred sixty-one.

Scientific notation

• Scientific notation: 2.1224161 × 10⁷

Factors of 21224161

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 4943

Divisors of 21224161

• Number of divisors d(n): 8
• Complete list of divisors:
  1 7 719 4217 5033 29519 3032023 21224161
• Sum of all divisors σ(n): 24295680
• Sum of proper divisors (its aliquot sum) s(n): 3071519
• 21224161 is a deficient number, because the sum of its proper divisors (3071519) is less than itself. Its deficiency is 18152642

Bases of 21224161

• Binary: 1010000111101101011100001₂
• Hexadecimal: 0x143DAE1
• Base-36: CMWO1

Squares and roots of 21224161

• 21224161 squared (21224161²) is 450465010153921
• 21224161 cubed (21224161³) is 9560741900373454085281
• The square root of 21224161 is 4606.9687431109
• The cube root of 21224161 is 276.8706012411

Scales and comparisons

• 21,224,161 seconds is equal to 35 weeks, 15 hours, 36 minutes, 1 second.
• To count from 1 to 21,224,161 would take you about four 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 21224161 cubic inches would be around 23.1 feet tall.

Recreational maths with 21224161

• 21224161 backwards is 16142212
• The number of decimal digits it has is: 8
• The sum of 21224161's digits is 19
• More coming soon!