72040

Names of 72040

• Cardinal: 72040 can be written as Seventy-two thousand and forty.

Scientific notation

• Scientific notation: 7.204 × 10⁴

Factors of 72040

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 1808

Divisors of 72040

• Number of divisors d(n): 16
• Complete list of divisors:
  1 2 4 5 8 10 20 40 1801 3602 7204 9005 14408 18010 36020 72040
• Sum of all divisors σ(n): 162180
• Sum of proper divisors (its aliquot sum) s(n): 90140
• 72040 is an abundant number, because the sum of its proper divisors (90140) is greater than itself. Its abundance is 18100

Bases of 72040

• Binary: 10001100101101000₂
• Hexadecimal: 0x11968
• Base-36: 1JL4

Squares and roots of 72040

• 72040 squared (72040²) is 5189761600
• 72040 cubed (72040³) is 373870425664000
• The square root of 72040 is 268.4026825499
• The cube root of 72040 is 41.6093790489

Scales and comparisons

• 72,040 seconds is equal to 20 hours, 40 seconds.
• To count from 1 to 72,040 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 72040 cubic inches would be around 3.5 feet tall.

Recreational maths with 72040

• 72040 backwards is 04027
• The number of decimal digits it has is: 5
• The sum of 72040's digits is 13
• More coming soon!