18086028 has 24 divisors (see below), whose sum is σ = 44683632. Its totient is φ = 5673984.

The previous prime is 18086021. The next prime is 18086039. The reversal of 18086028 is 82068081.

It is a self number, because there is not a number n which added to its sum of digits gives 18086028.

It is not an unprimeable number, because it can be changed into a prime (18086021) 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, 44125 + ... + 44532.

It is an arithmetic number, because the mean of its divisors is an integer number (1861818).

Almost surely, 2^18086028 is an apocalyptic number.

It is an amenable number.

18086028 is an abundant number, since it is smaller than the sum of its proper divisors (26597604).

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

18086028 is a wasteful number, since it uses less digits than its factorization.

18086028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88681 (or 88679 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 18086028 is about 4252.7670991955. The cubic root of 18086028 is about 262.4909892599.

The spelling of 18086028 in words is "eighteen million, eighty-six thousand, twenty-eight".