18073688 has 8 divisors (see below), whose sum is σ = 33888180. Its totient is φ = 9036840.

The previous prime is 18073687. The next prime is 18073697. The reversal of 18073688 is 88637081.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18073687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1129598 + ... + 1129613.

Almost surely, 2^18073688 is an apocalyptic number.

It is an amenable number.

18073688 is a deficient number, since it is larger than the sum of its proper divisors (15814492).

18073688 is a wasteful number, since it uses less digits than its factorization.

18073688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2259217 (or 2259213 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 18073688 is about 4251.3160315366. The cubic root of 18073688 is about 262.4312769455.

The spelling of 18073688 in words is "eighteen million, seventy-three thousand, six hundred eighty-eight".