28326028 has 12 divisors (see below), whose sum is σ = 49621320. Its totient is φ = 14148512.

The previous prime is 28325981. The next prime is 28326047. The reversal of 28326028 is 82062382.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1608 + ... + 7696.

It is an arithmetic number, because the mean of its divisors is an integer number (4135110).

Almost surely, 2^28326028 is an apocalyptic number.

It is an amenable number.

28326028 is a deficient number, since it is larger than the sum of its proper divisors (21295292).

28326028 is a wasteful number, since it uses less digits than its factorization.

28326028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7256 (or 7254 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 28326028 is about 5322.2202134072. The cubic root of 28326028 is about 304.8329390580.

The spelling of 28326028 in words is "twenty-eight million, three hundred twenty-six thousand, twenty-eight".