18768044 has 6 divisors (see below), whose sum is σ = 32844084. Its totient is φ = 9384020.

The previous prime is 18768019. The next prime is 18768047. The reversal of 18768044 is 44086781.

It is a junction number, because it is equal to n+sod(n) for n = 18767989 and 18768007.

It is not an unprimeable number, because it can be changed into a prime (18768047) 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 as a sum of consecutive naturals, namely, 2346002 + ... + 2346009.

It is an arithmetic number, because the mean of its divisors is an integer number (5474014).

Almost surely, 2^18768044 is an apocalyptic number.

It is an amenable number.

18768044 is a deficient number, since it is larger than the sum of its proper divisors (14076040).

18768044 is a wasteful number, since it uses less digits than its factorization.

18768044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4692015 (or 4692013 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 18768044 is about 4332.2100595424. The cubic root of 18768044 is about 265.7498354674.

The spelling of 18768044 in words is "eighteen million, seven hundred sixty-eight thousand, forty-four".