28017165 has 32 divisors (see below), whose sum is σ = 49159296. Its totient is φ = 13512960.

The previous prime is 28017163. The next prime is 28017167. The reversal of 28017165 is 56171082.

It is an interprime number because it is at equal distance from previous prime (28017163) and next prime (28017167).

It is not a de Polignac number, because 28017165 - 2¹ = 28017163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28017163) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 45399 + ... + 46011.

It is an arithmetic number, because the mean of its divisors is an integer number (1536228).

Almost surely, 2^28017165 is an apocalyptic number.

It is an amenable number.

28017165 is a deficient number, since it is larger than the sum of its proper divisors (21142131).

28017165 is a wasteful number, since it uses less digits than its factorization.

28017165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 28017165 is about 5293.1243136734. The cubic root of 28017165 is about 303.7209357617.

It can be divided in two parts, 28017 and 165, that added together give a palindrome (28182).

The spelling of 28017165 in words is "twenty-eight million, seventeen thousand, one hundred sixty-five".