72409

Names of 72409

• Cardinal: 72409 can be written as Seventy-two thousand, four hundred nine.

Scientific notation

• Scientific notation: 7.2409 × 10⁴

Factors of 72409

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 159

Divisors of 72409

• Number of divisors d(n): 8
• Complete list of divisors:
  1 19 37 103 703 1957 3811 72409
• Sum of all divisors σ(n): 79040
• Sum of proper divisors (its aliquot sum) s(n): 6631
• 72409 is a deficient number, because the sum of its proper divisors (6631) is less than itself. Its deficiency is 65778

Bases of 72409

• Binary: 10001101011011001₂
• Hexadecimal: 0x11AD9
• Base-36: 1JVD

Squares and roots of 72409

• 72409 squared (72409²) is 5243063281
• 72409 cubed (72409³) is 379644969113929
• The square root of 72409 is 269.0892045401
• The cube root of 72409 is 41.6803013157

Scales and comparisons

• 72,409 seconds is equal to 20 hours, 6 minutes, 49 seconds.
• To count from 1 to 72,409 would take you about twenty 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 72409 cubic inches would be around 3.5 feet tall.

Recreational maths with 72409

• 72409 backwards is 90427
• The number of decimal digits it has is: 5
• The sum of 72409's digits is 22
• More coming soon!