28368018 has 24 divisors (see below), whose sum is σ = 70244928. Its totient is φ = 8105112.

The previous prime is 28367981. The next prime is 28368029. The reversal of 28368018 is 81086382.

It is a Curzon 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, 112446 + ... + 112697.

It is an arithmetic number, because the mean of its divisors is an integer number (2926872).

Almost surely, 2^28368018 is an apocalyptic number.

28368018 is an abundant number, since it is smaller than the sum of its proper divisors (41876910).

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

28368018 is a wasteful number, since it uses less digits than its factorization.

28368018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225158 (or 225155 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 28368018 is about 5326.1635348532. The cubic root of 28368018 is about 304.9834909993.

The spelling of 28368018 in words is "twenty-eight million, three hundred sixty-eight thousand, eighteen".