28557608 has 32 divisors (see below), whose sum is σ = 57024000. Its totient is φ = 13368960.

The previous prime is 28557553. The next prime is 28557643. The reversal of 28557608 is 80675582.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12473 + ... + 14583.

It is an arithmetic number, because the mean of its divisors is an integer number (1782000).

Almost surely, 2^28557608 is an apocalyptic number.

It is an amenable number.

28557608 is a deficient number, since it is larger than the sum of its proper divisors (28466392).

28557608 is a wasteful number, since it uses less digits than its factorization.

28557608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2225 (or 2221 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 28557608 is about 5343.9318857935. The cubic root of 28557608 is about 305.6614079881.

The spelling of 28557608 in words is "twenty-eight million, five hundred fifty-seven thousand, six hundred eight".