18028828 has 12 divisors (see below), whose sum is σ = 31677912. Its totient is φ = 8978000.

The previous prime is 18028783. The next prime is 18028837. The reversal of 18028828 is 82882081.

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, 7975 + ... + 9982.

It is an arithmetic number, because the mean of its divisors is an integer number (2639826).

Almost surely, 2^18028828 is an apocalyptic number.

It is an amenable number.

18028828 is a deficient number, since it is larger than the sum of its proper divisors (13649084).

18028828 is a wasteful number, since it uses less digits than its factorization.

18028828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18212 (or 18210 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 37.

The square root of 18028828 is about 4246.0367403027. The cubic root of 18028828 is about 262.2139735614.

The spelling of 18028828 in words is "eighteen million, twenty-eight thousand, eight hundred twenty-eight".