18028608 has 112 divisors (see below), whose sum is σ = 53254656. Its totient is φ = 5345280.

The previous prime is 18028607. The next prime is 18028627. The reversal of 18028608 is 80682081.

It is not an unprimeable number, because it can be changed into a prime (18028603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77260 + ... + 77492.

It is an arithmetic number, because the mean of its divisors is an integer number (475488).

Almost surely, 2^18028608 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 18028608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26627328).

18028608 is an abundant number, since it is smaller than the sum of its proper divisors (35226048).

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

18028608 is a wasteful number, since it uses less digits than its factorization.

18028608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 18028608 is about 4246.0108337120. The cubic root of 18028608 is about 262.2129069861.

The spelling of 18028608 in words is "eighteen million, twenty-eight thousand, six hundred eight".