18804912 has 40 divisors (see below), whose sum is σ = 55520256. Its totient is φ = 5372736.

The previous prime is 18804911. The next prime is 18804913. The reversal of 18804912 is 21940881.

It is an interprime number because it is at equal distance from previous prime (18804911) and next prime (18804913).

It is not an unprimeable number, because it can be changed into a prime (18804911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27648 + ... + 28319.

Almost surely, 2^18804912 is an apocalyptic number.

18804912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18804912 is an abundant number, since it is smaller than the sum of its proper divisors (36715344).

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

18804912 is a wasteful number, since it uses less digits than its factorization.

18804912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55985 (or 55979 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 18804912 is about 4336.4630749033. The cubic root of 18804912 is about 265.9237348964.

The spelling of 18804912 in words is "eighteen million, eight hundred four thousand, nine hundred twelve".