18004704 has 48 divisors (see below), whose sum is σ = 49754880. Its totient is φ = 5685120.

The previous prime is 18004703. The next prime is 18004733. The reversal of 18004704 is 40740081.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×18004704² = 648338732255232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18004703) 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 7 ways as a sum of consecutive naturals, for example, 3112 + ... + 6759.

It is an arithmetic number, because the mean of its divisors is an integer number (1036560).

Almost surely, 2^18004704 is an apocalyptic number.

It is an amenable number.

18004704 is an abundant number, since it is smaller than the sum of its proper divisors (31750176).

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

18004704 is a wasteful number, since it uses less digits than its factorization.

18004704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9903 (or 9895 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 18004704 is about 4243.1950226215. The cubic root of 18004704 is about 262.0969670019.

Adding to 18004704 its reverse (40740081), we get a palindrome (58744785).

The spelling of 18004704 in words is "eighteen million, four thousand, seven hundred four".