20209

Names of 20209

• Cardinal: 20209 can be written as Twenty thousand, two hundred nine.

Scientific notation

• Scientific notation: 2.0209 × 10⁴

Factors of 20209

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 2894

Divisors of 20209

• Number of divisors d(n): 4
• Complete list of divisors:
  1 7 2887 20209
• Sum of all divisors σ(n): 23104
• Sum of proper divisors (its aliquot sum) s(n): 2895
• 20209 is a deficient number, because the sum of its proper divisors (2895) is less than itself. Its deficiency is 17314

Bases of 20209

• Binary: 100111011110001₂
• Hexadecimal: 0x4EF1
• Base-36: FLD

Squares and roots of 20209

• 20209 squared (20209²) is 408403681
• 20209 cubed (20209³) is 8253429989329
• The square root of 20209 is 142.1583623991
• The cube root of 20209 is 27.2384009215

Scales and comparisons

• 20,209 seconds is equal to 5 hours, 36 minutes, 49 seconds.
• To count from 1 to 20,209 would take you about five 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 20209 cubic inches would be around 2.3 feet tall.

Recreational maths with 20209

• 20209 backwards is 90202
• The number of decimal digits it has is: 5
• The sum of 20209's digits is 13
• More coming soon!