21379159

Names of 21379159

• Cardinal: 21379159 can be written as Twenty-one million, three hundred seventy-nine thousand, one hundred fifty-nine.

Scientific notation

• Scientific notation: 2.1379159 × 10⁷

Factors of 21379159

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 21379159

Divisors of 21379159

• Number of divisors d(n): 2
• Complete list of divisors:
  1 21379159
• Sum of all divisors σ(n): 21379160
• Sum of proper divisors (its aliquot sum) s(n): 1
• 21379159 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 21379158

Bases of 21379159

• Binary: 1010001100011100001010111₂
• Hexadecimal: 0x1463857
• Base-36: CQ89J

Squares and roots of 21379159

• 21379159 squared (21379159²) is 457068439547281
• 21379159 cubed (21379159³) is 9771738842963208516679
• The square root of 21379159 is 4623.7602662767
• The cube root of 21379159 is 277.5429536085

Scales and comparisons

• 21,379,159 seconds is equal to 35 weeks, 2 days, 10 hours, 39 minutes, 19 seconds.
• To count from 1 to 21,379,159 would take you about three 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 21379159 cubic inches would be around 23.1 feet tall.

Recreational maths with 21379159

• 21379159 backwards is 95197312
• The number of decimal digits it has is: 8
• The sum of 21379159's digits is 37
• More coming soon!