21316439

Names of 21316439

• Cardinal: 21316439 can be written as Twenty-one million, three hundred sixteen thousand, four hundred thirty-nine.

Scientific notation

• Scientific notation: 2.1316439 × 10⁷

Factors of 21316439

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 11184

Divisors of 21316439

• Number of divisors d(n): 4
• Complete list of divisors:
  1 2437 8747 21316439
• Sum of all divisors σ(n): 21327624
• Sum of proper divisors (its aliquot sum) s(n): 11185
• 21316439 is a deficient number, because the sum of its proper divisors (11185) is less than itself. Its deficiency is 21305254

Bases of 21316439

• Binary: 1010001010100001101010111₂
• Hexadecimal: 0x1454357
• Base-36: COVVB

Squares and roots of 21316439

• 21316439 squared (21316439²) is 454390571640721
• 21316439 cubed (21316439³) is 9685988902554559112519
• The square root of 21316439 is 4616.9729260631
• The cube root of 21316439 is 277.2712786777

Scales and comparisons

• 21,316,439 seconds is equal to 35 weeks, 1 day, 17 hours, 13 minutes, 59 seconds.
• To count from 1 to 21,316,439 would take you about six 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 21316439 cubic inches would be around 23.1 feet tall.

Recreational maths with 21316439

• 21316439 backwards is 93461312
• The number of decimal digits it has is: 8
• The sum of 21316439's digits is 29
• More coming soon!