18794872 has 16 divisors (see below), whose sum is σ = 35724240. Its totient is φ = 9268416.

The previous prime is 18794869. The next prime is 18794873. The reversal of 18794872 is 27849781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18794873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15508 + ... + 16675.

It is an arithmetic number, because the mean of its divisors is an integer number (2232765).

Almost surely, 2^18794872 is an apocalyptic number.

It is an amenable number.

18794872 is a deficient number, since it is larger than the sum of its proper divisors (16929368).

18794872 is a wasteful number, since it uses less digits than its factorization.

18794872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32262 (or 32258 counting only the distinct ones).

The product of its digits is 225792, while the sum is 46.

The square root of 18794872 is about 4335.3052949014. The cubic root of 18794872 is about 265.8764006398.

It can be divided in two parts, 187 and 94872, that added together give a palindrome (95059).

The spelling of 18794872 in words is "eighteen million, seven hundred ninety-four thousand, eight hundred seventy-two".