18528044 has 6 divisors (see below), whose sum is σ = 32424084. Its totient is φ = 9264020.

The previous prime is 18528043. The next prime is 18528073. The reversal of 18528044 is 44082581.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18528044.

It is not an unprimeable number, because it can be changed into a prime (18528043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2316002 + ... + 2316009.

It is an arithmetic number, because the mean of its divisors is an integer number (5404014).

Almost surely, 2^18528044 is an apocalyptic number.

It is an amenable number.

18528044 is a deficient number, since it is larger than the sum of its proper divisors (13896040).

18528044 is a wasteful number, since it uses less digits than its factorization.

18528044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4632015 (or 4632013 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 18528044 is about 4304.4214477674. The cubic root of 18528044 is about 264.6121964971.

The spelling of 18528044 in words is "eighteen million, five hundred twenty-eight thousand, forty-four".