28672832 has 14 divisors (see below), whose sum is σ = 56897778. Its totient is φ = 14336384.

The previous prime is 28672823. The next prime is 28672849. The reversal of 28672832 is 23827682.

It can be written as a sum of positive squares in only one way, i.e., 20286016 + 8386816 = 4504^2 + 2896^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223943 + ... + 224070.

It is an arithmetic number, because the mean of its divisors is an integer number (4064127).

Almost surely, 2^28672832 is an apocalyptic number.

It is an amenable number.

28672832 is a deficient number, since it is larger than the sum of its proper divisors (28224946).

28672832 is an equidigital number, since it uses as much as digits as its factorization.

28672832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448025 (or 448015 counting only the distinct ones).

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

The square root of 28672832 is about 5354.7018591141. The cubic root of 28672832 is about 306.0719497037.

The spelling of 28672832 in words is "twenty-eight million, six hundred seventy-two thousand, eight hundred thirty-two".