18504996 has 36 divisors (see below), whose sum is σ = 44021712. Its totient is φ = 6050096.

The previous prime is 18504991. The next prime is 18505013. The reversal of 18504996 is 69940581.

It is not an unprimeable number, because it can be changed into a prime (18504991) 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 11 ways as a sum of consecutive naturals, for example, 41551 + ... + 41993.

Almost surely, 2^18504996 is an apocalyptic number.

It is an amenable number.

18504996 is an abundant number, since it is smaller than the sum of its proper divisors (25516716).

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

18504996 is a wasteful number, since it uses less digits than its factorization.

18504996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568 (or 507 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 18504996 is about 4301.7433675197. The cubic root of 18504996 is about 264.5024293334.

The spelling of 18504996 in words is "eighteen million, five hundred four thousand, nine hundred ninety-six".