18297768 has 16 divisors (see below), whose sum is σ = 45744480. Its totient is φ = 6099248.

The previous prime is 18297761. The next prime is 18297791. The reversal of 18297768 is 86779281.

It is not an unprimeable number, because it can be changed into a prime (18297761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381180 + ... + 381227.

It is an arithmetic number, because the mean of its divisors is an integer number (2859030).

Almost surely, 2^18297768 is an apocalyptic number.

It is an amenable number.

18297768 is an abundant number, since it is smaller than the sum of its proper divisors (27446712).

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

18297768 is a wasteful number, since it uses less digits than its factorization.

18297768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762416 (or 762412 counting only the distinct ones).

The product of its digits is 338688, while the sum is 48.

The square root of 18297768 is about 4277.5890405695. The cubic root of 18297768 is about 263.5113781068.

The spelling of 18297768 in words is "eighteen million, two hundred ninety-seven thousand, seven hundred sixty-eight".