978

Names of 978

• Cardinal: 978 can be written as Nine hundred seventy-eight.

Scientific notation

• Scientific notation: 9.78 × 10²

Factors of 978

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 168

Divisors of 978

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 3 6 163 326 489 978
• Sum of all divisors σ(n): 1968
• Sum of proper divisors (its aliquot sum) s(n): 990
• 978 is an abundant number, because the sum of its proper divisors (990) is greater than itself. Its abundance is 12

Bases of 978

• Binary: 1111010010₂
• Hexadecimal: 0x3D2
• Base-36: R6

Squares and roots of 978

• 978 squared (978²) is 956484
• 978 cubed (978³) is 935441352
• The square root of 978 is 31.2729915423
• The cube root of 978 is 9.9261222181

Scales and comparisons

• 978 seconds is equal to 16 minutes, 18 seconds.
• To count from 1 to 978 would take you about eight minutes.

  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 978 cubic inches would be around 0.8 feet tall.

Recreational maths with 978

• 978 backwards is 879
• The number of decimal digits it has is: 3
• The sum of 978's digits is 24
• More coming soon!