228672618 has 8 divisors (see below), whose sum is σ = 457345248. Its totient is φ = 76224204.

The previous prime is 228672607. The next prime is 228672629. The reversal of 228672618 is 816276822.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (228672607) and next prime (228672629).

It is a sphenic number, since it is the product of 3 distinct primes.

228672618 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 228672618.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19056046 + ... + 19056057.

It is an arithmetic number, because the mean of its divisors is an integer number (57168156).

Almost surely, 2^228672618 is an apocalyptic number.

228672618 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

228672618 is a wasteful number, since it uses less digits than its factorization.

228672618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38112108.

The product of its digits is 129024, while the sum is 42.

The square root of 228672618 is about 15121.9250758625. The cubic root of 228672618 is about 611.5116303393.

The spelling of 228672618 in words is "two hundred twenty-eight million, six hundred seventy-two thousand, six hundred eighteen".