28632872 has 16 divisors (see below), whose sum is σ = 53926560. Its totient is φ = 14252464.

The previous prime is 28632859. The next prime is 28632893. The reversal of 28632872 is 27823682.

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 3 ways as a sum of consecutive naturals, for example, 6068 + ... + 9699.

It is an arithmetic number, because the mean of its divisors is an integer number (3370410).

Almost surely, 2^28632872 is an apocalyptic number.

It is an amenable number.

28632872 is a deficient number, since it is larger than the sum of its proper divisors (25293688).

28632872 is a wasteful number, since it uses less digits than its factorization.

28632872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16000 (or 15996 counting only the distinct ones).

The product of its digits is 64512, while the sum is 38.

The square root of 28632872 is about 5350.9692579943. The cubic root of 28632872 is about 305.9296974924.

The spelling of 28632872 in words is "twenty-eight million, six hundred thirty-two thousand, eight hundred seventy-two".