18940

Names of 18940

• Cardinal: 18940 can be written as Eighteen thousand, nine hundred forty.

Scientific notation

• Scientific notation: 1.894 × 10⁴

Factors of 18940

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 954

Divisors of 18940

• Number of divisors d(n): 12
• Complete list of divisors:
  1 2 4 5 10 20 947 1894 3788 4735 9470 18940
• Sum of all divisors σ(n): 39816
• Sum of proper divisors (its aliquot sum) s(n): 20876
• 18940 is an abundant number, because the sum of its proper divisors (20876) is greater than itself. Its abundance is 1936

Bases of 18940

• Binary: 100100111111100₂
• Hexadecimal: 0x49FC
• Base-36: EM4

Squares and roots of 18940

• 18940 squared (18940²) is 358723600
• 18940 cubed (18940³) is 6794224984000
• The square root of 18940 is 137.6226725507
• The cube root of 18940 is 26.6558984301

Scales and comparisons

• 18,940 seconds is equal to 5 hours, 15 minutes, 40 seconds.
• To count from 1 to 18,940 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 18940 cubic inches would be around 2.2 feet tall.

Recreational maths with 18940

• 18940 backwards is 04981
• The number of decimal digits it has is: 5
• The sum of 18940's digits is 22
• More coming soon!