21329839

Names of 21329839

• Cardinal: 21329839 can be written as Twenty-one million, three hundred twenty-nine thousand, eight hundred thirty-nine.

Scientific notation

• Scientific notation: 2.1329839 × 10⁷

Factors of 21329839

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 21329839

Divisors of 21329839

• Number of divisors d(n): 2
• Complete list of divisors:
  1 21329839
• Sum of all divisors σ(n): 21329840
• Sum of proper divisors (its aliquot sum) s(n): 1
• 21329839 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 21329838

Bases of 21329839

• Binary: 1010001010111011110101111₂
• Hexadecimal: 0x14577AF
• Base-36: CP67J

Squares and roots of 21329839

• 21329839 squared (21329839²) is 454962031765921
• 21329839 cubed (21329839³) is 9704266888679980616719
• The square root of 21329839 is 4618.4238653461
• The cube root of 21329839 is 277.3293661921

Scales and comparisons

• 21,329,839 seconds is equal to 35 weeks, 1 day, 20 hours, 57 minutes, 19 seconds.
• To count from 1 to 21,329,839 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 21329839 cubic inches would be around 23.1 feet tall.

Recreational maths with 21329839

• 21329839 backwards is 93892312
• The number of decimal digits it has is: 8
• The sum of 21329839's digits is 37
• More coming soon!