330228 has 18 divisors (see below), whose sum is σ = 834834. Its totient is φ = 110064.

The previous prime is 330227. The next prime is 330229. The reversal of 330228 is 822033.

It is an interprime number because it is at equal distance from previous prime (330227) and next prime (330229).

It can be written as a sum of positive squares in only one way, i.e., 191844 + 138384 = 438^2 + 372^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 330228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (330227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4551 + ... + 4622.

2³³⁰²²⁸ is an apocalyptic number.

It is an amenable number.

330228 is an abundant number, since it is smaller than the sum of its proper divisors (504606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

330228 is a wasteful number, since it uses less digits than its factorization.

330228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9183 (or 9178 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 330228 is about 574.6546789160. The cubic root of 330228 is about 69.1201435504.

The spelling of 330228 in words is "three hundred thirty thousand, two hundred twenty-eight".