21423091

Names of 21423091

• Cardinal: 21423091 can be written as Twenty-one million, four hundred twenty-three thousand and ninety-one.

Scientific notation

• Scientific notation: 2.1423091 × 10⁷

Factors of 21423091

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 293540

Divisors of 21423091

• Number of divisors d(n): 4
• Complete list of divisors:
  1 73 293467 21423091
• Sum of all divisors σ(n): 21716632
• Sum of proper divisors (its aliquot sum) s(n): 293541
• 21423091 is a deficient number, because the sum of its proper divisors (293541) is less than itself. Its deficiency is 21129550

Bases of 21423091

• Binary: 1010001101110001111110011₂
• Hexadecimal: 0x146E3F3
• Base-36: CR65V

Squares and roots of 21423091

• 21423091 squared (21423091²) is 458948827994281
• 21423091 cubed (21423091³) is 9832102506464829342571
• The square root of 21423091 is 4628.5085070679
• The cube root of 21423091 is 277.7329310651

Scales and comparisons

• 21,423,091 seconds is equal to 35 weeks, 2 days, 22 hours, 51 minutes, 31 seconds.
• To count from 1 to 21,423,091 would take you about twenty-two hours!

  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 21423091 cubic inches would be around 23.1 feet tall.

Recreational maths with 21423091

• 21423091 backwards is 19032412
• The number of decimal digits it has is: 8
• The sum of 21423091's digits is 22
• More coming soon!