28856392 has 24 divisors (see below), whose sum is σ = 56048850. Its totient is φ = 13927424.

The previous prime is 28856371. The next prime is 28856413. The reversal of 28856392 is 29365882.

It is an interprime number because it is at equal distance from previous prime (28856371) and next prime (28856413).

It can be written as a sum of positive squares in 3 ways, for example, as 28579716 + 276676 = 5346^2 + 526^2 .

Its product of digits (207360) is a multiple of the sum of its prime divisors (4320).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4584 + ... + 8872.

Almost surely, 2^28856392 is an apocalyptic number.

It is an amenable number.

28856392 is a deficient number, since it is larger than the sum of its proper divisors (27192458).

28856392 is a wasteful number, since it uses less digits than its factorization.

28856392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4353 (or 4320 counting only the distinct ones).

The product of its digits is 207360, while the sum is 43.

The square root of 28856392 is about 5371.8145909925. The cubic root of 28856392 is about 306.7237060463.

The spelling of 28856392 in words is "twenty-eight million, eight hundred fifty-six thousand, three hundred ninety-two".