18268768 has 72 divisors (see below), whose sum is σ = 42747264. Its totient is φ = 7660800.

The previous prime is 18268751. The next prime is 18268777. The reversal of 18268768 is 86786281.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95553 + ... + 95743.

It is an arithmetic number, because the mean of its divisors is an integer number (593712).

Almost surely, 2^18268768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18268768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21373632).

18268768 is an abundant number, since it is smaller than the sum of its proper divisors (24478496).

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

18268768 is a wasteful number, since it uses less digits than its factorization.

18268768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276 (or 261 counting only the distinct ones).

The product of its digits is 258048, while the sum is 46.

The square root of 18268768 is about 4274.1979364554. The cubic root of 18268768 is about 263.3720920714.

The spelling of 18268768 in words is "eighteen million, two hundred sixty-eight thousand, seven hundred sixty-eight".