228858618 has 16 divisors (see below), whose sum is σ = 459889056. Its totient is φ = 75924240.

The previous prime is 228858613. The next prime is 228858659. The reversal of 228858618 is 816858822.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (228858613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89121 + ... + 91652.

It is an arithmetic number, because the mean of its divisors is an integer number (28743066).

Almost surely, 2^228858618 is an apocalyptic number.

228858618 is an abundant number, since it is smaller than the sum of its proper divisors (231030438).

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

228858618 is a wasteful number, since it uses less digits than its factorization.

228858618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180989.

The product of its digits is 491520, while the sum is 48.

The square root of 228858618 is about 15128.0738364142. The cubic root of 228858618 is about 611.6773845363.

It can be divided in two parts, 2288 and 58618, that added together give a palindrome (60906).

The spelling of 228858618 in words is "two hundred twenty-eight million, eight hundred fifty-eight thousand, six hundred eighteen".