228549228 has 12 divisors (see below), whose sum is σ = 533281560. Its totient is φ = 76183072.

The previous prime is 228549227. The next prime is 228549239. The reversal of 228549228 is 822945822.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 228549228.

It is not an unprimeable number, because it can be changed into a prime (228549227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9522873 + ... + 9522896.

It is an arithmetic number, because the mean of its divisors is an integer number (44440130).

Almost surely, 2^228549228 is an apocalyptic number.

It is an amenable number.

228549228 is an abundant number, since it is smaller than the sum of its proper divisors (304732332).

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

228549228 is a wasteful number, since it uses less digits than its factorization.

228549228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19045776 (or 19045774 counting only the distinct ones).

The product of its digits is 184320, while the sum is 42.

The square root of 228549228 is about 15117.8446876531. The cubic root of 228549228 is about 611.4016215469.

The spelling of 228549228 in words is "two hundred twenty-eight million, five hundred forty-nine thousand, two hundred twenty-eight".