18285804 has 24 divisors (see below), whose sum is σ = 47407920. Its totient is φ = 6095232.

The previous prime is 18285791. The next prime is 18285823. The reversal of 18285804 is 40858281.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 84549 + ... + 84764.

It is an arithmetic number, because the mean of its divisors is an integer number (1975330).

Almost surely, 2^18285804 is an apocalyptic number.

It is an amenable number.

18285804 is an abundant number, since it is smaller than the sum of its proper divisors (29122116).

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

18285804 is a wasteful number, since it uses less digits than its factorization.

18285804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169326 (or 169318 counting only the distinct ones).

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

The square root of 18285804 is about 4276.1903605897. The cubic root of 18285804 is about 263.4539332589.

The spelling of 18285804 in words is "eighteen million, two hundred eighty-five thousand, eight hundred four".