428984891

Names of 428984891

• Cardinal: 428984891 can be written as Four hundred twenty-eight million, nine hundred eighty-four thousand, eight hundred ninety-one.

Scientific notation

• Scientific notation: 4.28984891 × 10⁸

Factors of 428984891

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 11605

Divisors of 428984891

• Number of divisors d(n): 8
• Complete list of divisors:
  1 23 1933 9649 44459 221927 18651517 428984891
• Sum of all divisors σ(n): 447914400
• Sum of proper divisors (its aliquot sum) s(n): 18929509
• 428984891 is a deficient number, because the sum of its proper divisors (18929509) is less than itself. Its deficiency is 410055382

Bases of 428984891

• Binary: 11001100100011100101000111011₂
• Hexadecimal: 0x1991CA3B
• Base-36: 73EMUZ

Squares and roots of 428984891

• 428984891 squared (428984891²) is 184028036706281881
• 428984891 cubed (428984891³) is 78945247267388331736059971
• The square root of 428984891 is 20711.9504392995
• The cube root of 428984891 is 754.1898190437

Scales and comparisons

• 428,984,891 seconds is equal to 13 years, 33 weeks, 2 days, 2 hours, 28 minutes, 11 seconds.
• To count from 1 to 428,984,891 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 428984891 cubic inches would be around 62.8 feet tall.

Recreational maths with 428984891

• 428984891 backwards is 198489824
• The number of decimal digits it has is: 9
• The sum of 428984891's digits is 53
• More coming soon!