18997144

Names of 18997144

• Cardinal: 18997144 can be written as Eighteen million, nine hundred ninety-seven thousand, one hundred forty-four.

Scientific notation

• Scientific notation: 1.8997144 × 10⁷

Factors of 18997144

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 2374645

Divisors of 18997144

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 4 8 2374643 4749286 9498572 18997144
• Sum of all divisors σ(n): 35619660
• Sum of proper divisors (its aliquot sum) s(n): 16622516
• 18997144 is a deficient number, because the sum of its proper divisors (16622516) is less than itself. Its deficiency is 2374628

Bases of 18997144

• Binary: 1001000011101111110011000₂
• Hexadecimal: 0x121DF98
• Base-36: BB6AG

Squares and roots of 18997144

• 18997144 squared (18997144²) is 360891480156736
• 18997144 cubed (18997144³) is 6855907416910656361984
• The square root of 18997144 is 4358.5713255607
• The cube root of 18997144 is 266.8267941055

Scales and comparisons

• 18,997,144 seconds is equal to 31 weeks, 2 days, 20 hours, 59 minutes, 4 seconds.
• To count from 1 to 18,997,144 would take you about forty-seven weeks!

  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 18997144 cubic inches would be around 22.2 feet tall.

Recreational maths with 18997144

• 18997144 backwards is 44179981
• The number of decimal digits it has is: 8
• The sum of 18997144's digits is 43
• More coming soon!