18431409

Names of 18431409

• Cardinal: 18431409 can be written as Eighteen million, four hundred thirty-one thousand, four hundred nine.

Scientific notation

• Scientific notation: 1.8431409 × 10⁷

Factors of 18431409

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 6143806

Divisors of 18431409

• Number of divisors d(n): 4
• Complete list of divisors:
  1 3 6143803 18431409
• Sum of all divisors σ(n): 24575216
• Sum of proper divisors (its aliquot sum) s(n): 6143807
• 18431409 is a deficient number, because the sum of its proper divisors (6143807) is less than itself. Its deficiency is 12287602

Bases of 18431409

• Binary: 1000110010011110110110001₂
• Hexadecimal: 0x1193DB1
• Base-36: AZ1RL

Squares and roots of 18431409

• 18431409 squared (18431409²) is 339716837725281
• 18431409 cubed (18431409³) is 6261459980301283750929
• The square root of 18431409 is 4293.1816872805
• The cube root of 18431409 is 264.1513566189

Scales and comparisons

• 18,431,409 seconds is equal to 30 weeks, 3 days, 7 hours, 50 minutes, 9 seconds.
• To count from 1 to 18,431,409 would take you about forty-five 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 18431409 cubic inches would be around 22 feet tall.

Recreational maths with 18431409

• 18431409 backwards is 90413481
• The number of decimal digits it has is: 8
• The sum of 18431409's digits is 30
• More coming soon!