18429890

Names of 18429890

• Cardinal: 18429890 can be written as Eighteen million, four hundred twenty-nine thousand, eight hundred ninety.

Scientific notation

• Scientific notation: 1.842989 × 10⁷

Factors of 18429890

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 1842996

Divisors of 18429890

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 5 10 1842989 3685978 9214945 18429890
• Sum of all divisors σ(n): 33173820
• Sum of proper divisors (its aliquot sum) s(n): 14743930
• 18429890 is a deficient number, because the sum of its proper divisors (14743930) is less than itself. Its deficiency is 3685960

Bases of 18429890

• Binary: 1000110010011011111000010₂
• Hexadecimal: 0x11937C2
• Base-36: AZ0LE

Squares and roots of 18429890

• 18429890 squared (18429890²) is 339660845412100
• 18429890 cubed (18429890³) is 6259912018252007669000
• The square root of 18429890 is 4293.0047752129
• The cube root of 18429890 is 264.1440998589

Scales and comparisons

• 18,429,890 seconds is equal to 30 weeks, 3 days, 7 hours, 24 minutes, 50 seconds.
• To count from 1 to 18,429,890 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 18429890 cubic inches would be around 22 feet tall.

Recreational maths with 18429890

• 18429890 backwards is 09892481
• The number of decimal digits it has is: 8
• The sum of 18429890's digits is 41
• More coming soon!