28552028 has 12 divisors (see below), whose sum is σ = 50191680. Its totient is φ = 14211552.

The previous prime is 28551997. The next prime is 28552057. The reversal of 28552028 is 82025582.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28551985 and 28552003.

It is a congruent 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, 15113 + ... + 16896.

It is an arithmetic number, because the mean of its divisors is an integer number (4182640).

Almost surely, 2^28552028 is an apocalyptic number.

It is an amenable number.

28552028 is a deficient number, since it is larger than the sum of its proper divisors (21639652).

28552028 is a wasteful number, since it uses less digits than its factorization.

28552028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32236 (or 32234 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 32.

The square root of 28552028 is about 5343.4097727949. The cubic root of 28552028 is about 305.6414985037.

The spelling of 28552028 in words is "twenty-eight million, five hundred fifty-two thousand, twenty-eight".