28242208 has 24 divisors (see below), whose sum is σ = 58529520. Its totient is φ = 13377600.

The previous prime is 28242199. The next prime is 28242223. The reversal of 28242208 is 80224282.

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, 22618 + ... + 23833.

It is an arithmetic number, because the mean of its divisors is an integer number (2438730).

Almost surely, 2^28242208 is an apocalyptic number.

It is an amenable number.

28242208 is an abundant number, since it is smaller than the sum of its proper divisors (30287312).

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

28242208 is a wasteful number, since it uses less digits than its factorization.

28242208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46480 (or 46472 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 28242208 is about 5314.3398461145. The cubic root of 28242208 is about 304.5319633222.

The spelling of 28242208 in words is "twenty-eight million, two hundred forty-two thousand, two hundred eight".