128918

Names of 128918

• Cardinal: 128918 can be written as One hundred twenty-eight thousand, nine hundred eighteen.

Scientific notation

• Scientific notation: 1.28918 × 10⁵

Factors of 128918

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 958

Divisors of 128918

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 73 146 883 1766 64459 128918
• Sum of all divisors σ(n): 196248
• Sum of proper divisors (its aliquot sum) s(n): 67330
• 128918 is a deficient number, because the sum of its proper divisors (67330) is less than itself. Its deficiency is 61588

Bases of 128918

• Binary: 11111011110010110₂
• Hexadecimal: 0x1F796
• Base-36: 2RH2

Squares and roots of 128918

• 128918 squared (128918²) is 16619850724
• 128918 cubed (128918³) is 2142597915636632
• The square root of 128918 is 359.0515283355
• The cube root of 128918 is 50.5170350659

Scales and comparisons

• 128,918 seconds is equal to 1 day, 11 hours, 48 minutes, 38 seconds.
• To count from 1 to 128,918 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 128918 cubic inches would be around 4.2 feet tall.

Recreational maths with 128918

• 128918 backwards is 819821
• The number of decimal digits it has is: 6
• The sum of 128918's digits is 29
• More coming soon!