28568712 has 32 divisors (see below), whose sum is σ = 73886400. Its totient is φ = 9194304.

The previous prime is 28568711. The next prime is 28568713. The reversal of 28568712 is 21786582.

It is an interprime number because it is at equal distance from previous prime (28568711) and next prime (28568713).

It is not an unprimeable number, because it can be changed into a prime (28568711) 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, 19828 + ... + 21219.

It is an arithmetic number, because the mean of its divisors is an integer number (2308950).

Almost surely, 2^28568712 is an apocalyptic number.

It is an amenable number.

28568712 is an abundant number, since it is smaller than the sum of its proper divisors (45317688).

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

28568712 is a wasteful number, since it uses less digits than its factorization.

28568712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41085 (or 41081 counting only the distinct ones).

The product of its digits is 53760, while the sum is 39.

The square root of 28568712 is about 5344.9707202191. The cubic root of 28568712 is about 305.7010194344.

The spelling of 28568712 in words is "twenty-eight million, five hundred sixty-eight thousand, seven hundred twelve".