18013838

Names of 18013838

• Cardinal: 18013838 can be written as Eighteen million, thirteen thousand, eight hundred thirty-eight.

Scientific notation

• Scientific notation: 1.8013838 × 10⁷

Factors of 18013838

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 9006921

Divisors of 18013838

• Number of divisors d(n): 4
• Complete list of divisors:
  1 2 9006919 18013838
• Sum of all divisors σ(n): 27020760
• Sum of proper divisors (its aliquot sum) s(n): 9006922
• 18013838 is a deficient number, because the sum of its proper divisors (9006922) is less than itself. Its deficiency is 9006916

Bases of 18013838

• Binary: 1000100101101111010001110₂
• Hexadecimal: 0x112DE8E
• Base-36: AQ3KE

Squares and roots of 18013838

• 18013838 squared (18013838²) is 324498359490244
• 18013838 cubed (18013838³) is 5845460879123017996472
• The square root of 18013838 is 4244.2711977441
• The cube root of 18013838 is 262.1412811427

Scales and comparisons

• 18,013,838 seconds is equal to 29 weeks, 5 days, 11 hours, 50 minutes, 38 seconds.
• To count from 1 to 18,013,838 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 18013838 cubic inches would be around 21.8 feet tall.

Recreational maths with 18013838

• 18013838 backwards is 83831081
• The number of decimal digits it has is: 8
• The sum of 18013838's digits is 32
• More coming soon!