304

304 = 2⁴ x 19.

304 has a unique representation as a sum of three squares: 304 = 4² + 12² + 12².

304 is a primitive pseudoperfect number.

304 is the sum of six consecutive primes: 304 = 41 + 43 + 47 + 53 + 59 + 61. It is also the sum of eight consecutive primes: 304 = 23 + 29 + 31 + 37 + 41 + 43 + 47 + 53.

The first Roman calendar was introduced in the year 535 B.C., having 10 months, with 304 days a year, beginning in March.

Source: On-Line Encyclopedia of Integer Sequences