1388

Names of 1388

• Cardinal: 1388 can be written as One thousand, three hundred eighty-eight.

Scientific notation

• Scientific notation: 1.388 × 10³

Factors of 1388

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 349

Divisors of 1388

• Number of divisors d(n): 6
• Complete list of divisors:
  1 2 4 347 694 1388
• Sum of all divisors σ(n): 2436
• Sum of proper divisors (its aliquot sum) s(n): 1048
• 1388 is a deficient number, because the sum of its proper divisors (1048) is less than itself. Its deficiency is 340

Bases of 1388

• Binary: 10101101100₂
• Hexadecimal: 0x56C
• Base-36: 12K

Squares and roots of 1388

• 1388 squared (1388²) is 1926544
• 1388 cubed (1388³) is 2674043072
• The square root of 1388 is 37.2558720203
• The cube root of 1388 is 11.1548351207

Scales and comparisons

• 1,388 seconds is equal to 23 minutes, 8 seconds.
• To count from 1 to 1,388 would take you about twenty-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 1388 cubic inches would be around 0.9 feet tall.

Recreational maths with 1388

• 1388 backwards is 8831
• The number of decimal digits it has is: 4
• The sum of 1388's digits is 20
• More coming soon!