428230138

Names of 428230138

• Cardinal: 428230138 can be written as Four hundred twenty-eight million, two hundred thirty thousand, one hundred thirty-eight.

Scientific notation

• Scientific notation: 4.28230138 × 10⁸

Factors of 428230138

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 30587876

Divisors of 428230138

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 7 14 30587867 61175734 214115069 428230138
• Sum of all divisors σ(n): 734108832
• Sum of proper divisors (its aliquot sum) s(n): 305878694
• 428230138 is a deficient number, because the sum of its proper divisors (305878694) is less than itself. Its deficiency is 122351444

Bases of 428230138

• Binary: 11001100001100100010111111010₂
• Hexadecimal: 0x198645FA
• Base-36: 72YGHM

Squares and roots of 428230138

• 428230138 squared (428230138²) is 183381051091499044
• 428230138 cubed (428230138³) is 78529292815497686238988072
• The square root of 428230138 is 20693.7221881419
• The cube root of 428230138 is 753.7472539725

Scales and comparisons

• 428,230,138 seconds is equal to 13 years, 32 weeks, 8 hours, 48 minutes, 58 seconds.
• To count from 1 to 428,230,138 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 428230138 cubic inches would be around 62.8 feet tall.

Recreational maths with 428230138

• 428230138 backwards is 831032824
• The number of decimal digits it has is: 9
• The sum of 428230138's digits is 31
• More coming soon!