438

Names of 438

• Cardinal: 438 can be written as Four hundred thirty-eight.

Scientific notation

• Scientific notation: 4.38 × 10²

Factors of 438

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 78

Divisors of 438

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 3 6 73 146 219 438
• Sum of all divisors σ(n): 888
• Sum of proper divisors (its aliquot sum) s(n): 450
• 438 is an abundant number, because the sum of its proper divisors (450) is greater than itself. Its abundance is 12

Bases of 438

• Binary: 110110110₂
• Hexadecimal: 0x1B6
• Base-36: C6

Squares and roots of 438

• 438 squared (438²) is 191844
• 438 cubed (438³) is 84027672
• The square root of 438 is 20.9284495365
• The cube root of 438 is 7.5943633181

Scales and comparisons

• 438 seconds is equal to 7 minutes, 18 seconds.
• To count from 1 to 438 would take you about three 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 438 cubic inches would be around 0.6 feet tall.

Recreational maths with 438

• 438 backwards is 834
• The number of decimal digits it has is: 3
• The sum of 438's digits is 15
• More coming soon!