18528804 has 48 divisors (see below), whose sum is σ = 54902400. Its totient is φ = 5293728.

The previous prime is 18528751. The next prime is 18528833. The reversal of 18528804 is 40882581.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 15 ways as a sum of consecutive naturals, for example, 11499 + ... + 13010.

It is an arithmetic number, because the mean of its divisors is an integer number (1143800).

Almost surely, 2^18528804 is an apocalyptic number.

18528804 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18528804 is an abundant number, since it is smaller than the sum of its proper divisors (36373596).

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

18528804 is a wasteful number, since it uses less digits than its factorization.

18528804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24529 (or 24521 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 18528804 is about 4304.5097281804. The cubic root of 18528804 is about 264.6158144815.

The spelling of 18528804 in words is "eighteen million, five hundred twenty-eight thousand, eight hundred four".