19818

Names of 19818

• Cardinal: 19818 can be written as Nineteen thousand, eight hundred eighteen.

Scientific notation

• Scientific notation: 1.9818 × 10⁴

Factors of 19818

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 372

Divisors of 19818

• Number of divisors d(n): 16
• Complete list of divisors:
  1 2 3 6 9 18 27 54 367 734 1101 2202 3303 6606 9909 19818
• Sum of all divisors σ(n): 44160
• Sum of proper divisors (its aliquot sum) s(n): 24342
• 19818 is an abundant number, because the sum of its proper divisors (24342) is greater than itself. Its abundance is 4524

Bases of 19818

• Binary: 100110101101010₂
• Hexadecimal: 0x4D6A
• Base-36: FAI

Squares and roots of 19818

• 19818 squared (19818²) is 392753124
• 19818 cubed (19818³) is 7783581411432
• The square root of 19818 is 140.7764184799
• The cube root of 19818 is 27.0615878047

Scales and comparisons

• 19,818 seconds is equal to 5 hours, 30 minutes, 18 seconds.
• To count from 1 to 19,818 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 19818 cubic inches would be around 2.3 feet tall.

Recreational maths with 19818

• 19818 backwards is 81891
• 19818 is a Harshad number.
• The number of decimal digits it has is: 5
• The sum of 19818's digits is 27
• More coming soon!