128431

Names of 128431

• Cardinal: 128431 can be written as One hundred twenty-eight thousand, four hundred thirty-one.

Scientific notation

• Scientific notation: 1.28431 × 10⁵

Factors of 128431

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 128431

Divisors of 128431

• Number of divisors d(n): 2
• Complete list of divisors:
  1 128431
• Sum of all divisors σ(n): 128432
• Sum of proper divisors (its aliquot sum) s(n): 1
• 128431 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 128430

Bases of 128431

• Binary: 11111010110101111₂
• Hexadecimal: 0x1F5AF
• Base-36: 2R3J

Squares and roots of 128431

• 128431 squared (128431²) is 16494521761
• 128431 cubed (128431³) is 2118407924286991
• The square root of 128431 is 358.3727110147
• The cube root of 128431 is 50.4533438313

Scales and comparisons

• 128,431 seconds is equal to 1 day, 11 hours, 40 minutes, 31 seconds.
• To count from 1 to 128,431 would take you about eleven hours.

  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 128431 cubic inches would be around 4.2 feet tall.

Recreational maths with 128431

• 128431 backwards is 134821
• The number of decimal digits it has is: 6
• The sum of 128431's digits is 19
• More coming soon!