128438

Names of 128438

• Cardinal: 128438 can be written as One hundred twenty-eight thousand, four hundred thirty-eight.

Scientific notation

• Scientific notation: 1.28438 × 10⁵

Factors of 128438

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 582

Divisors of 128438

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 149 298 431 862 64219 128438
• Sum of all divisors σ(n): 194400
• Sum of proper divisors (its aliquot sum) s(n): 65962
• 128438 is a deficient number, because the sum of its proper divisors (65962) is less than itself. Its deficiency is 62476

Bases of 128438

• Binary: 11111010110110110₂
• Hexadecimal: 0x1F5B6
• Base-36: 2R3Q

Squares and roots of 128438

• 128438 squared (128438²) is 16496319844
• 128438 cubed (128438³) is 2118754328123672
• The square root of 128438 is 358.3824772503
• The cube root of 128438 is 50.4542604505

Scales and comparisons

• 128,438 seconds is equal to 1 day, 11 hours, 40 minutes, 38 seconds.
• To count from 1 to 128,438 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 128438 cubic inches would be around 4.2 feet tall.

Recreational maths with 128438

• 128438 backwards is 834821
• The number of decimal digits it has is: 6
• The sum of 128438's digits is 26
• More coming soon!