228347228 has 24 divisors (see below), whose sum is σ = 407680560. Its totient is φ = 111879680.

The previous prime is 228347201. The next prime is 228347233. The reversal of 228347228 is 822743822.

It is a junction number, because it is equal to n+sod(n) for n = 228347191 and 228347200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81938 + ... + 84678.

It is an arithmetic number, because the mean of its divisors is an integer number (16986690).

Almost surely, 2^228347228 is an apocalyptic number.

It is an amenable number.

228347228 is a deficient number, since it is larger than the sum of its proper divisors (179333332).

228347228 is a wasteful number, since it uses less digits than its factorization.

228347228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3157 (or 3155 counting only the distinct ones).

The product of its digits is 86016, while the sum is 38.

The square root of 228347228 is about 15111.1623642922. The cubic root of 228347228 is about 611.2214422306.

The spelling of 228347228 in words is "two hundred twenty-eight million, three hundred forty-seven thousand, two hundred twenty-eight".