28547688 has 32 divisors (see below), whose sum is σ = 76860000. Its totient is φ = 8783808.

The previous prime is 28547639. The next prime is 28547689. The reversal of 28547688 is 88674582.

It is not an unprimeable number, because it can be changed into a prime (28547689) by changing a digit.

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, 45438 + ... + 46061.

It is an arithmetic number, because the mean of its divisors is an integer number (2401875).

Almost surely, 2^28547688 is an apocalyptic number.

It is an amenable number.

28547688 is an abundant number, since it is smaller than the sum of its proper divisors (48312312).

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

28547688 is a wasteful number, since it uses less digits than its factorization.

28547688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91521 (or 91517 counting only the distinct ones).

The product of its digits is 860160, while the sum is 48.

The square root of 28547688 is about 5343.0036496338. The cubic root of 28547688 is about 305.6260115557.

The spelling of 28547688 in words is "twenty-eight million, five hundred forty-seven thousand, six hundred eighty-eight".