21641493

Names of 21641493

• Cardinal: 21641493 can be written as Twenty-one million, six hundred forty-one thousand, four hundred ninety-three.

Scientific notation

• Scientific notation: 2.1641493 × 10⁷

Factors of 21641493

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 424363

Divisors of 21641493

• Number of divisors d(n): 8
• Complete list of divisors:
  1 3 17 51 424343 1273029 7213831 21641493
• Sum of all divisors σ(n): 30552768
• Sum of proper divisors (its aliquot sum) s(n): 8911275
• 21641493 is a deficient number, because the sum of its proper divisors (8911275) is less than itself. Its deficiency is 12730218

Bases of 21641493

• Binary: 1010010100011100100010101₂
• Hexadecimal: 0x14A3915
• Base-36: CVUOL

Squares and roots of 21641493

• 21641493 squared (21641493²) is 468354219269049
• 21641493 cubed (21641493³) is 10135884557831589050157
• The square root of 21641493 is 4652.0418097863
• The cube root of 21641493 is 278.6735432155

Scales and comparisons

• 21,641,493 seconds is equal to 35 weeks, 5 days, 11 hours, 31 minutes, 33 seconds.
• To count from 1 to 21,641,493 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 21641493 cubic inches would be around 23.2 feet tall.

Recreational maths with 21641493

• 21641493 backwards is 39414612
• The number of decimal digits it has is: 8
• The sum of 21641493's digits is 30
• More coming soon!