2340

2340 = 2 x 2 x 3 x 3 x 5 x 13.

2340 is 100100100100 in base 2 (binary) (A033138 and A020330). It is 4444 in base 8 and 210210 in base 4.

2340 is the number of ways of dissecting a polygon into 7 hexagons (A005038).

2340!!!!! - 1 is a prime number (A085149).

2340 is the sum of the divisors of 10³ (A046915).

2340 has two representations as a sum of two squares: 2340 = 6² + 48² = 24² + 42².

2340 divides 61³ - 1.

2340 is a year in which there are five Thursdays in the month of February (A143995).

Source: On-Line Encyclopedia of Integer Sequences