18625728 has 56 divisors (see below), whose sum is σ = 53766720. Its totient is φ = 5643520.

The previous prime is 18625723. The next prime is 18625741. The reversal of 18625728 is 82752681.

It is not an unprimeable number, because it can be changed into a prime (18625721) 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, 2298 + ... + 6521.

It is an arithmetic number, because the mean of its divisors is an integer number (960120).

Almost surely, 2^18625728 is an apocalyptic number.

It is an amenable number.

18625728 is an abundant number, since it is smaller than the sum of its proper divisors (35140992).

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

18625728 is a wasteful number, since it uses less digits than its factorization.

18625728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8845 (or 8835 counting only the distinct ones).

The product of its digits is 53760, while the sum is 39.

The square root of 18625728 is about 4315.7534683992. The cubic root of 18625728 is about 265.0764132316.

The spelling of 18625728 in words is "eighteen million, six hundred twenty-five thousand, seven hundred twenty-eight".