304228 has 12 divisors (see below), whose sum is σ = 560560. Its totient is φ = 144072.

The previous prime is 304223. The next prime is 304253. The reversal of 304228 is 822403.

It is a happy number.

304228 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (304223) by changing a digit.

304228 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1926 + ... + 2077.

2³⁰⁴²²⁸ is an apocalyptic number.

304228 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

304228 is a deficient number, since it is larger than the sum of its proper divisors (256332).

304228 is a wasteful number, since it uses less digits than its factorization.

304228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4026 (or 4024 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 304228 is about 551.5686720618. The cubic root of 304228 is about 67.2563138123.

The spelling of 304228 in words is "three hundred four thousand, two hundred twenty-eight".