18005528 has 16 divisors (see below), whose sum is σ = 34109880. Its totient is φ = 8909568.

The previous prime is 18005509. The next prime is 18005563. The reversal of 18005528 is 82550081.

It is a self number, because there is not a number n which added to its sum of digits gives 18005528.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10826 + ... + 12377.

Almost surely, 2^18005528 is an apocalyptic number.

It is an amenable number.

18005528 is a deficient number, since it is larger than the sum of its proper divisors (16104352).

18005528 is a wasteful number, since it uses less digits than its factorization.

18005528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23306 (or 23302 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 29.

The square root of 18005528 is about 4243.2921181554. The cubic root of 18005528 is about 262.1009653016.

The spelling of 18005528 in words is "eighteen million, five thousand, five hundred twenty-eight".