428396731

Names of 428396731

• Cardinal: 428396731 can be written as Four hundred twenty-eight million, three hundred ninety-six thousand, seven hundred thirty-one.

Scientific notation

• Scientific notation: 4.28396731 × 10⁸

Factors of 428396731

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 61199540

Divisors of 428396731

• Number of divisors d(n): 4
• Complete list of divisors:
  1 7 61199533 428396731
• Sum of all divisors σ(n): 489596272
• Sum of proper divisors (its aliquot sum) s(n): 61199541
• 428396731 is a deficient number, because the sum of its proper divisors (61199541) is less than itself. Its deficiency is 367197190

Bases of 428396731

• Binary: 11001100010001101000010111011₂
• Hexadecimal: 0x1988D0BB
• Base-36: 732117

Squares and roots of 428396731

• 428396731 squared (428396731²) is 183523759131486361
• 428396731 cubed (428396731³) is 78620978472760156223485891
• The square root of 428396731 is 20697.7470029953
• The cube root of 428396731 is 753.8449839277

Scales and comparisons

• 428,396,731 seconds is equal to 13 years, 32 weeks, 2 days, 7 hours, 5 minutes, 31 seconds.
• To count from 1 to 428,396,731 would take you about twenty years!

  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 428396731 cubic inches would be around 62.8 feet tall.

Recreational maths with 428396731

• 428396731 backwards is 137693824
• The number of decimal digits it has is: 9
• The sum of 428396731's digits is 43
• More coming soon!