3920

Names of 3920

• Cardinal: 3920 can be written as Three thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 3.92 × 10³

Factors of 3920

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 14

Divisors of 3920

• Number of divisors d(n): 30
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 35 40 49 56 70 80 98 112 140 196 245 280 392 490 560 784 980 1960 3920
• Sum of all divisors σ(n): 10602
• Sum of proper divisors (its aliquot sum) s(n): 6682
• 3920 is an abundant number, because the sum of its proper divisors (6682) is greater than itself. Its abundance is 2762

Bases of 3920

• Binary: 111101010000₂
• Hexadecimal: 0xF50
• Base-36: 30W

Squares and roots of 3920

• 3920 squared (3920²) is 15366400
• 3920 cubed (3920³) is 60236288000
• The square root of 3920 is 62.6099033699
• The cube root of 3920 is 15.7674703263

Scales and comparisons

• 3,920 seconds is equal to 1 hour, 5 minutes, 20 seconds.
• To count from 1 to 3,920 would take you about five 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 3920 cubic inches would be around 1.3 feet tall.

Recreational maths with 3920

• 3920 backwards is 0293
• 3920 is a Harshad number.
• The number of decimal digits it has is: 4
• The sum of 3920's digits is 14
• More coming soon!