18290804 has 12 divisors (see below), whose sum is σ = 36581664. Its totient is φ = 7838904.

The previous prime is 18290761. The next prime is 18290809. The reversal of 18290804 is 40809281.

It is a happy number.

18290804 is an admirable number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18290809) by changing a digit.

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, 326594 + ... + 326649.

It is an arithmetic number, because the mean of its divisors is an integer number (3048472).

Almost surely, 2^18290804 is an apocalyptic number.

18290804 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18290804 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18290804 is a wasteful number, since it uses less digits than its factorization.

18290804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653254 (or 653252 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 18290804 is about 4276.7749531627. The cubic root of 18290804 is about 263.4779436811.

The spelling of 18290804 in words is "eighteen million, two hundred ninety thousand, eight hundred four".