28679656 has 16 divisors (see below), whose sum is σ = 54512100. Its totient is φ = 14143104.

The previous prime is 28679647. The next prime is 28679701. The reversal of 28679656 is 65697682.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 27984100 + 695556 = 5290^2 + 834^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23971 + ... + 25138.

Almost surely, 2^28679656 is an apocalyptic number.

It is an amenable number.

28679656 is a deficient number, since it is larger than the sum of its proper divisors (25832444).

28679656 is a wasteful number, since it uses less digits than its factorization.

28679656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49188 (or 49184 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 49.

The square root of 28679656 is about 5355.3390182135. The cubic root of 28679656 is about 306.0962290088.

The spelling of 28679656 in words is "twenty-eight million, six hundred seventy-nine thousand, six hundred fifty-six".