18798804 has 60 divisors (see below), whose sum is σ = 52049844. Its totient is φ = 5895936.

The previous prime is 18798781. The next prime is 18798811. The reversal of 18798804 is 40889781.

It can be written as a sum of positive squares in 2 ways, for example, as 16402500 + 2396304 = 4050^2 + 1548^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18798804.

It is a congruent number.

It is an unprimeable number.

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 in 19 ways as a sum of consecutive naturals, for example, 3802 + ... + 7214.

Almost surely, 2^18798804 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18798804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26024922).

18798804 is an abundant number, since it is smaller than the sum of its proper divisors (33251040).

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

18798804 is a wasteful number, since it uses less digits than its factorization.

18798804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3446 (or 3435 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 18798804 is about 4335.7587571266. The cubic root of 18798804 is about 265.8949403264.

The spelling of 18798804 in words is "eighteen million, seven hundred ninety-eight thousand, eight hundred four".