72989

Names of 72989

• Cardinal: 72989 can be written as Seventy-two thousand, nine hundred eighty-nine.

Scientific notation

• Scientific notation: 7.2989 × 10⁴

Factors of 72989

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 10434

Divisors of 72989

• Number of divisors d(n): 4
• Complete list of divisors:
  1 7 10427 72989
• Sum of all divisors σ(n): 83424
• Sum of proper divisors (its aliquot sum) s(n): 10435
• 72989 is a deficient number, because the sum of its proper divisors (10435) is less than itself. Its deficiency is 62554

Bases of 72989

• Binary: 10001110100011101₂
• Hexadecimal: 0x11D1D
• Base-36: 1KBH

Squares and roots of 72989

• 72989 squared (72989²) is 5327394121
• 72989 cubed (72989³) is 388841169497669
• The square root of 72989 is 270.1647645419
• The cube root of 72989 is 41.7912926469

Scales and comparisons

• 72,989 seconds is equal to 20 hours, 16 minutes, 29 seconds.
• To count from 1 to 72,989 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 72989 cubic inches would be around 3.5 feet tall.

Recreational maths with 72989

• 72989 backwards is 98927
• The number of decimal digits it has is: 5
• The sum of 72989's digits is 35
• More coming soon!