18324504 has 96 divisors (see below), whose sum is σ = 57367440. Its totient is φ = 5222400.

The previous prime is 18324479. The next prime is 18324511. The reversal of 18324504 is 40542381.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 12784 + ... + 14144.

Almost surely, 2^18324504 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 18324504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28683720).

18324504 is an abundant number, since it is smaller than the sum of its proper divisors (39042936).

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

18324504 is a wasteful number, since it uses less digits than its factorization.

18324504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401 (or 1394 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 18324504 is about 4280.7130247191. The cubic root of 18324504 is about 263.6396599019.

Adding to 18324504 its reverse (40542381), we get a palindrome (58866885).

It can be divided in two parts, 1832 and 4504, that added together give a palindrome (6336).

The spelling of 18324504 in words is "eighteen million, three hundred twenty-four thousand, five hundred four".