18268328 has 32 divisors (see below), whose sum is σ = 37081800. Its totient is φ = 8387328.

The previous prime is 18268321. The next prime is 18268333. The reversal of 18268328 is 82386281.

It can be written as a sum of positive squares in 4 ways, for example, as 5466244 + 12802084 = 2338^2 + 3578^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18268291 and 18268300.

It is not an unprimeable number, because it can be changed into a prime (18268321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27650 + ... + 28302.

Almost surely, 2^18268328 is an apocalyptic number.

It is an amenable number.

18268328 is an abundant number, since it is smaller than the sum of its proper divisors (18813472).

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

18268328 is a wasteful number, since it uses less digits than its factorization.

18268328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941 (or 937 counting only the distinct ones).

The product of its digits is 36864, while the sum is 38.

The square root of 18268328 is about 4274.1464645003. The cubic root of 18268328 is about 263.3699776312.

The spelling of 18268328 in words is "eighteen million, two hundred sixty-eight thousand, three hundred twenty-eight".