18718072 has 16 divisors (see below), whose sum is σ = 35913240. Its totient is φ = 9141216.

The previous prime is 18718057. The next prime is 18718093. The reversal of 18718072 is 27081781.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26863 + ... + 27550.

Almost surely, 2^18718072 is an apocalyptic number.

It is an amenable number.

18718072 is a deficient number, since it is larger than the sum of its proper divisors (17195168).

18718072 is a wasteful number, since it uses less digits than its factorization.

18718072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54462 (or 54458 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 34.

The square root of 18718072 is about 4326.4387202409. The cubic root of 18718072 is about 265.5137630104.

The spelling of 18718072 in words is "eighteen million, seven hundred eighteen thousand, seventy-two".