18090431

Names of 18090431

• Cardinal: 18090431 can be written as Eighteen million, ninety thousand, four hundred thirty-one.

Scientific notation

• Scientific notation: 1.8090431 × 10⁷

Factors of 18090431

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 12921

Divisors of 18090431

• Number of divisors d(n): 8
• Complete list of divisors:
  1 17 83 1411 12821 217957 1064143 18090431
• Sum of all divisors σ(n): 19386864
• Sum of proper divisors (its aliquot sum) s(n): 1296433
• 18090431 is a deficient number, because the sum of its proper divisors (1296433) is less than itself. Its deficiency is 16793998

Bases of 18090431

• Binary: 1000101000000100110111111₂
• Hexadecimal: 0x11409BF
• Base-36: ARQNZ

Squares and roots of 18090431

• 18090431 squared (18090431²) is 327263693765761
• 18090431 cubed (18090431³) is 5920341270874629532991
• The square root of 18090431 is 4253.2847306523
• The cube root of 18090431 is 262.5122884647

Scales and comparisons

• 18,090,431 seconds is equal to 29 weeks, 6 days, 9 hours, 7 minutes, 11 seconds.
• To count from 1 to 18,090,431 would take you about forty-four 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 18090431 cubic inches would be around 21.9 feet tall.

Recreational maths with 18090431

• 18090431 backwards is 13409081
• The number of decimal digits it has is: 8
• The sum of 18090431's digits is 26
• More coming soon!