18328968 has 96 divisors (see below), whose sum is σ = 58181760. Its totient is φ = 5103360.

The previous prime is 18328951. The next prime is 18328969. The reversal of 18328968 is 86982381.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (18328969) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20221 + ... + 21107.

It is an arithmetic number, because the mean of its divisors is an integer number (606060).

Almost surely, 2^18328968 is an apocalyptic number.

18328968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18328968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29090880).

18328968 is an abundant number, since it is smaller than the sum of its proper divisors (39852792).

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

18328968 is a wasteful number, since it uses less digits than its factorization.

18328968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947 (or 940 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 18328968 is about 4281.2344014314. The cubic root of 18328968 is about 263.6610664274.

The spelling of 18328968 in words is "eighteen million, three hundred twenty-eight thousand, nine hundred sixty-eight".