218332028 has 12 divisors (see below), whose sum is σ = 384216840. Its totient is φ = 108555792.

The previous prime is 218332019. The next prime is 218332057. The reversal of 218332028 is 820233812.

218332028 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 151751 + ... + 153182.

It is an arithmetic number, because the mean of its divisors is an integer number (32018070).

Almost surely, 2^218332028 is an apocalyptic number.

It is an amenable number.

218332028 is a deficient number, since it is larger than the sum of its proper divisors (165884812).

218332028 is a wasteful number, since it uses less digits than its factorization.

218332028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305116 (or 305114 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 218332028 is about 14776.0626690604. The cubic root of 218332028 is about 602.1515606079.

The spelling of 218332028 in words is "two hundred eighteen million, three hundred thirty-two thousand, twenty-eight".