128398

Names of 128398

• Cardinal: 128398 can be written as One hundred twenty-eight thousand, three hundred ninety-eight.

Scientific notation

• Scientific notation: 1.28398 × 10⁵

Factors of 128398

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 1538

Divisors of 128398

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 43 86 1493 2986 64199 128398
• Sum of all divisors σ(n): 197208
• Sum of proper divisors (its aliquot sum) s(n): 68810
• 128398 is a deficient number, because the sum of its proper divisors (68810) is less than itself. Its deficiency is 59588

Bases of 128398

• Binary: 11111010110001110₂
• Hexadecimal: 0x1F58E
• Base-36: 2R2M

Squares and roots of 128398

• 128398 squared (128398²) is 16486046404
• 128398 cubed (128398³) is 2116775386180792
• The square root of 128398 is 358.3266666047
• The cube root of 128398 is 50.4490221773

Scales and comparisons

• 128,398 seconds is equal to 1 day, 11 hours, 39 minutes, 58 seconds.
• To count from 1 to 128,398 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 128398 cubic inches would be around 4.2 feet tall.

Recreational maths with 128398

• 128398 backwards is 893821
• The number of decimal digits it has is: 6
• The sum of 128398's digits is 31
• More coming soon!