28353656 has 16 divisors (see below), whose sum is σ = 53233200. Its totient is φ = 14158144.

The previous prime is 28353649. The next prime is 28353667. The reversal of 28353656 is 65635382.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5765 + ... + 9483.

It is an arithmetic number, because the mean of its divisors is an integer number (3327075).

Almost surely, 2^28353656 is an apocalyptic number.

It is an amenable number.

28353656 is a deficient number, since it is larger than the sum of its proper divisors (24879544).

28353656 is a wasteful number, since it uses less digits than its factorization.

28353656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4678 (or 4674 counting only the distinct ones).

The product of its digits is 129600, while the sum is 38.

The square root of 28353656 is about 5324.8151141612. The cubic root of 28353656 is about 304.9320138711.

The spelling of 28353656 in words is "twenty-eight million, three hundred fifty-three thousand, six hundred fifty-six".