28256679 has 12 divisors (see below), whose sum is σ = 44525832. Its totient is φ = 17125200.

The previous prime is 28256677. The next prime is 28256687. The reversal of 28256679 is 97665282.

28256679 is a `hidden beast` number, since 2 + 82 + 566 + 7 + 9 = 666.

It is not a de Polignac number, because 28256679 - 2¹ = 28256677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28256677) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142612 + ... + 142809.

It is an arithmetic number, because the mean of its divisors is an integer number (3710486).

Almost surely, 2^28256679 is an apocalyptic number.

28256679 is a deficient number, since it is larger than the sum of its proper divisors (16269153).

28256679 is a wasteful number, since it uses less digits than its factorization.

28256679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285438 (or 285435 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 28256679 is about 5315.7011767028. The cubic root of 28256679 is about 304.5839673957.

The spelling of 28256679 in words is "twenty-eight million, two hundred fifty-six thousand, six hundred seventy-nine".