18028698 has 16 divisors (see below), whose sum is σ = 36377856. Its totient is φ = 5956160.

The previous prime is 18028667. The next prime is 18028723. The reversal of 18028698 is 89682081.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12618 + ... + 13973.

It is an arithmetic number, because the mean of its divisors is an integer number (2273616).

Almost surely, 2^18028698 is an apocalyptic number.

18028698 is an abundant number, since it is smaller than the sum of its proper divisors (18349158).

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

18028698 is a wasteful number, since it uses less digits than its factorization.

18028698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26709.

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 18028698 is about 4246.0214318819. The cubic root of 18028698 is about 262.2133433134.

The spelling of 18028698 in words is "eighteen million, twenty-eight thousand, six hundred ninety-eight".