28255017 has 48 divisors (see below), whose sum is σ = 46818432. Its totient is φ = 15079680.

The previous prime is 28255001. The next prime is 28255049. The reversal of 28255017 is 71055282.

It is not a de Polignac number, because 28255017 - 2⁴ = 28255001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28255057) by changing a digit.

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 in 47 ways as a sum of consecutive naturals, for example, 206173 + ... + 206309.

It is an arithmetic number, because the mean of its divisors is an integer number (975384).

Almost surely, 2^28255017 is an apocalyptic number.

It is an amenable number.

28255017 is a deficient number, since it is larger than the sum of its proper divisors (18563415).

28255017 is a wasteful number, since it uses less digits than its factorization.

28255017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 231 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 28255017 is about 5315.5448450747. The cubic root of 28255017 is about 304.5779956102.

The spelling of 28255017 in words is "twenty-eight million, two hundred fifty-five thousand, seventeen".