228328 has 8 divisors (see below), whose sum is σ = 428130. Its totient is φ = 114160.

The previous prime is 228311. The next prime is 228331. The reversal of 228328 is 823822.

It can be written as a sum of positive squares in only one way, i.e., 213444 + 14884 = 462^2 + 122^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 15.

It is an unprimeable number.

228328 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14263 + ... + 14278.

2²²⁸³²⁸ is an apocalyptic number.

It is an amenable number.

228328 is a deficient number, since it is larger than the sum of its proper divisors (199802).

228328 is a wasteful number, since it uses less digits than its factorization.

228328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28547 (or 28543 counting only the distinct ones).

The product of its digits is 1536, while the sum is 25.

The square root of 228328 is about 477.8367922209. The cubic root of 228328 is about 61.1204285763.

The spelling of 228328 in words is "two hundred twenty-eight thousand, three hundred twenty-eight".