28545628 has 24 divisors (see below), whose sum is σ = 52400880. Its totient is φ = 13587840.

The previous prime is 28545613. The next prime is 28545631. The reversal of 28545628 is 82654582.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6783 + ... + 10153.

It is an arithmetic number, because the mean of its divisors is an integer number (2183370).

Almost surely, 2^28545628 is an apocalyptic number.

It is an amenable number.

28545628 is a deficient number, since it is larger than the sum of its proper divisors (23855252).

28545628 is a wasteful number, since it uses less digits than its factorization.

28545628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3477 (or 3475 counting only the distinct ones).

The product of its digits is 153600, while the sum is 40.

The square root of 28545628 is about 5342.8108706934. The cubic root of 28545628 is about 305.6186600587.

The spelling of 28545628 in words is "twenty-eight million, five hundred forty-five thousand, six hundred twenty-eight".