28528612 has 12 divisors (see below), whose sum is σ = 57057280. Its totient is φ = 12226536.

The previous prime is 28528609. The next prime is 28528639. The reversal of 28528612 is 21682582.

28528612 is an admirable number.

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, 509412 + ... + 509467.

Almost surely, 2^28528612 is an apocalyptic number.

It is an amenable number.

28528612 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28528612 is a wasteful number, since it uses less digits than its factorization.

28528612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018890 (or 1018888 counting only the distinct ones).

The product of its digits is 15360, while the sum is 34.

The square root of 28528612 is about 5341.2182131046. The cubic root of 28528612 is about 305.5579217350.

The spelling of 28528612 in words is "twenty-eight million, five hundred twenty-eight thousand, six hundred twelve".