68990

Names of 68990

• Cardinal: 68990 can be written as Sixty-eight thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 6.899 × 10⁴

Factors of 68990

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 6906

Divisors of 68990

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 5 10 6899 13798 34495 68990
• Sum of all divisors σ(n): 124200
• Sum of proper divisors (its aliquot sum) s(n): 55210
• 68990 is a deficient number, because the sum of its proper divisors (55210) is less than itself. Its deficiency is 13780

Bases of 68990

• Binary: 10000110101111110₂
• Hexadecimal: 0x10D7E
• Base-36: 1H8E

Squares and roots of 68990

• 68990 squared (68990²) is 4759620100
• 68990 cubed (68990³) is 328366190699000
• The square root of 68990 is 262.6594753669
• The cube root of 68990 is 41.0136777685

Scales and comparisons

• 68,990 seconds is equal to 19 hours, 9 minutes, 50 seconds.
• To count from 1 to 68,990 would take you about nineteen 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 68990 cubic inches would be around 3.4 feet tall.

Recreational maths with 68990

• 68990 backwards is 09986
• The number of decimal digits it has is: 5
• The sum of 68990's digits is 32
• More coming soon!