18334404 has 144 divisors (see below), whose sum is σ = 55413120. Its totient is φ = 5227200.

The previous prime is 18334397. The next prime is 18334417. The reversal of 18334404 is 40443381.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 47 ways as a sum of consecutive naturals, for example, 300534 + ... + 300594.

Almost surely, 2^18334404 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 18334404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27706560).

18334404 is an abundant number, since it is smaller than the sum of its proper divisors (37078716).

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

18334404 is a wasteful number, since it uses less digits than its factorization.

18334404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 18334404 is about 4281.8692179935. The cubic root of 18334404 is about 263.6871293585.

Adding to 18334404 its reverse (40443381), we get a palindrome (58777785).

The spelling of 18334404 in words is "eighteen million, three hundred thirty-four thousand, four hundred four".