18864804 has 36 divisors (see below), whose sum is σ = 51206064. Its totient is φ = 5389776.

The previous prime is 18864803. The next prime is 18864809. The reversal of 18864804 is 40846881.

It is not an unprimeable number, because it can be changed into a prime (18864803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15454 + ... + 16629.

Almost surely, 2^18864804 is an apocalyptic number.

18864804 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18864804 is an abundant number, since it is smaller than the sum of its proper divisors (32341260).

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

18864804 is a wasteful number, since it uses less digits than its factorization.

18864804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32104 (or 32095 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 39.

The square root of 18864804 is about 4343.3632129952. The cubic root of 18864804 is about 266.2057503222.

The spelling of 18864804 in words is "eighteen million, eight hundred sixty-four thousand, eight hundred four".