228730218 has 16 divisors (see below), whose sum is σ = 457648896. Its totient is φ = 76212000.

The previous prime is 228730217. The next prime is 228730231. The reversal of 228730218 is 812037822.

It is not an unprimeable number, because it can be changed into a prime (228730211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11655 + ... + 24357.

It is an arithmetic number, because the mean of its divisors is an integer number (28603056).

Almost surely, 2^228730218 is an apocalyptic number.

228730218 is an abundant number, since it is smaller than the sum of its proper divisors (228918678).

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

228730218 is a wasteful number, since it uses less digits than its factorization.

228730218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15709.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 228730218 is about 15123.8294753677. The cubic root of 228730218 is about 611.5629702756.

The spelling of 228730218 in words is "two hundred twenty-eight million, seven hundred thirty thousand, two hundred eighteen".