21479339

Names of 21479339

• Cardinal: 21479339 can be written as Twenty-one million, four hundred seventy-nine thousand, three hundred thirty-nine.

Scientific notation

• Scientific notation: 2.1479339 × 10⁷

Factors of 21479339

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 3068484

Divisors of 21479339

• Number of divisors d(n): 4
• Complete list of divisors:
  1 7 3068477 21479339
• Sum of all divisors σ(n): 24547824
• Sum of proper divisors (its aliquot sum) s(n): 3068485
• 21479339 is a deficient number, because the sum of its proper divisors (3068485) is less than itself. Its deficiency is 18410854

Bases of 21479339

• Binary: 1010001111011111110101011₂
• Hexadecimal: 0x147BFAB
• Base-36: CSDKB

Squares and roots of 21479339

• 21479339 squared (21479339²) is 461362003876921
• 21479339 cubed (21479339³) is 9909750882991700435219
• The square root of 21479339 is 4634.5807793155
• The cube root of 21479339 is 277.9757884819

Scales and comparisons

• 21,479,339 seconds is equal to 35 weeks, 3 days, 14 hours, 28 minutes, 59 seconds.
• To count from 1 to 21,479,339 would take you about twenty-one 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 21479339 cubic inches would be around 23.2 feet tall.

Recreational maths with 21479339

• 21479339 backwards is 93397412
• The number of decimal digits it has is: 8
• The sum of 21479339's digits is 38
• More coming soon!