138209

Names of 138209

• Cardinal: 138209 can be written as One hundred thirty-eight thousand, two hundred nine.

Scientific notation

• Scientific notation: 1.38209 × 10⁵

Factors of 138209

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 138209

Divisors of 138209

• Number of divisors d(n): 2
• Complete list of divisors:
  1 138209
• Sum of all divisors σ(n): 138210
• Sum of proper divisors (its aliquot sum) s(n): 1
• 138209 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 138208

Bases of 138209

• Binary: 100001101111100001₂
• Hexadecimal: 0x21BE1
• Base-36: 2YN5

Squares and roots of 138209

• 138209 squared (138209²) is 19101727681
• 138209 cubed (138209³) is 2640030681063329
• The square root of 138209 is 371.7647105361
• The cube root of 138209 is 51.7025672559

Scales and comparisons

• 138,209 seconds is equal to 1 day, 14 hours, 23 minutes, 29 seconds.
• To count from 1 to 138,209 would take you about fourteen 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 138209 cubic inches would be around 4.3 feet tall.

Recreational maths with 138209

• 138209 backwards is 902831
• The number of decimal digits it has is: 6
• The sum of 138209's digits is 23
• More coming soon!