128831

Names of 128831

• Cardinal: 128831 can be written as One hundred twenty-eight thousand, eight hundred thirty-one.

Scientific notation

• Scientific notation: 1.28831 × 10⁵

Factors of 128831

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 128831

Divisors of 128831

• Number of divisors d(n): 2
• Complete list of divisors:
  1 128831
• Sum of all divisors σ(n): 128832
• Sum of proper divisors (its aliquot sum) s(n): 1
• 128831 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 128830

Bases of 128831

• Binary: 11111011100111111₂
• Hexadecimal: 0x1F73F
• Base-36: 2REN

Squares and roots of 128831

• 128831 squared (128831²) is 16597426561
• 128831 cubed (128831³) is 2138263061280191
• The square root of 128831 is 358.9303553615
• The cube root of 128831 is 50.5056687423

Scales and comparisons

• 128,831 seconds is equal to 1 day, 11 hours, 47 minutes, 11 seconds.
• To count from 1 to 128,831 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 128831 cubic inches would be around 4.2 feet tall.

Recreational maths with 128831

• 128831 backwards is 138821
• 128831 is a twin prime! Its twin is 128833
• The number of decimal digits it has is: 6
• The sum of 128831's digits is 23
• More coming soon!