28259656 has 8 divisors (see below), whose sum is σ = 52986870. Its totient is φ = 14129824.

The previous prime is 28259603. The next prime is 28259677. The reversal of 28259656 is 65695282.

It can be written as a sum of positive squares in only one way, i.e., 27394756 + 864900 = 5234^2 + 930^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 1766221 + ... + 1766236.

Almost surely, 2^28259656 is an apocalyptic number.

It is an amenable number.

28259656 is a deficient number, since it is larger than the sum of its proper divisors (24727214).

28259656 is a wasteful number, since it uses less digits than its factorization.

28259656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3532463 (or 3532459 counting only the distinct ones).

The product of its digits is 259200, while the sum is 43.

The square root of 28259656 is about 5315.9811888305. The cubic root of 28259656 is about 304.5946635645.

The spelling of 28259656 in words is "twenty-eight million, two hundred fifty-nine thousand, six hundred fifty-six".