1981730

Names of 1981730

• Cardinal: 1981730 can be written as One million, nine hundred eighty-one thousand, seven hundred thirty.

Scientific notation

• Scientific notation: 1.98173 × 10⁶

Factors of 1981730

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 198180

Divisors of 1981730

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 5 10 198173 396346 990865 1981730
• Sum of all divisors σ(n): 3567132
• Sum of proper divisors (its aliquot sum) s(n): 1585402
• 1981730 is a deficient number, because the sum of its proper divisors (1585402) is less than itself. Its deficiency is 396328

Bases of 1981730

• Binary: 111100011110100100010₂
• Hexadecimal: 0x1E3D22
• Base-36: 16H42

Squares and roots of 1981730

• 1981730 squared (1981730²) is 3927253792900
• 1981730 cubed (1981730³) is 7782756659003717000
• The square root of 1981730 is 1407.7393224599
• The cube root of 1981730 is 125.6072848629

Scales and comparisons

• 1,981,730 seconds is equal to 3 weeks, 1 day, 22 hours, 28 minutes, 50 seconds.
• To count from 1 to 1,981,730 would take you about 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 1981730 cubic inches would be around 10.5 feet tall.

Recreational maths with 1981730

• 1981730 backwards is 0371891
• The number of decimal digits it has is: 7
• The sum of 1981730's digits is 29
• More coming soon!