18947

Names of 18947

• Cardinal: 18947 can be written as Eighteen thousand, nine hundred forty-seven.

Scientific notation

• Scientific notation: 1.8947 × 10⁴

Factors of 18947

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 18947

Divisors of 18947

• Number of divisors d(n): 2
• Complete list of divisors:
  1 18947
• Sum of all divisors σ(n): 18948
• Sum of proper divisors (its aliquot sum) s(n): 1
• 18947 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 18946

Bases of 18947

• Binary: 100101000000011₂
• Hexadecimal: 0x4A03
• Base-36: EMB

Squares and roots of 18947

• 18947 squared (18947²) is 358988809
• 18947 cubed (18947³) is 6801760964123
• The square root of 18947 is 137.6481020573
• The cube root of 18947 is 26.6591819271

Scales and comparisons

• 18,947 seconds is equal to 5 hours, 15 minutes, 47 seconds.
• To count from 1 to 18,947 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 18947 cubic inches would be around 2.2 feet tall.

Recreational maths with 18947

• 18947 backwards is 74981
• The number of decimal digits it has is: 5
• The sum of 18947's digits is 29
• More coming soon!