18045028 has 12 divisors (see below), whose sum is σ = 31626112. Its totient is φ = 9009000.

The previous prime is 18045019. The next prime is 18045031. The reversal of 18045028 is 82054081.

18045028 is a nontrivial binomial coefficient, being equal to C(6008, 2).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18044987 and 18045005.

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, 1 + ... + 6007.

Almost surely, 2^18045028 is an apocalyptic number.

18045028 is the 6007-th triangular number and also the 3004-th hexagonal number.

18045028 is the 2003-rd centered nonagonal number.

It is an amenable number.

18045028 is a deficient number, since it is larger than the sum of its proper divisors (13581084).

18045028 is a wasteful number, since it uses less digits than its factorization.

18045028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6762 (or 6760 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 18045028 is about 4247.9439732652. The cubic root of 18045028 is about 262.2924884577.

The spelling of 18045028 in words is "eighteen million, forty-five thousand, twenty-eight".