228466218 has 24 divisors (see below), whose sum is σ = 472159584. Its totient is φ = 73696920.

The previous prime is 228466211. The next prime is 228466223. The reversal of 228466218 is 812664822.

It is not an unprimeable number, because it can be changed into a prime (228466211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14046 + ... + 25577.

It is an arithmetic number, because the mean of its divisors is an integer number (19673316).

Almost surely, 2^228466218 is an apocalyptic number.

228466218 is an abundant number, since it is smaller than the sum of its proper divisors (243693366).

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

228466218 is a wasteful number, since it uses less digits than its factorization.

228466218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39690 (or 39659 counting only the distinct ones).

The product of its digits is 73728, while the sum is 39.

The square root of 228466218 is about 15115.0990072841. The cubic root of 228466218 is about 611.3275914065.

The spelling of 228466218 in words is "two hundred twenty-eight million, four hundred sixty-six thousand, two hundred eighteen".