28168165 has 8 divisors (see below), whose sum is σ = 35580960. Its totient is φ = 21348432.

The previous prime is 28168163. The next prime is 28168177. The reversal of 28168165 is 56186182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28168165 - 2¹ = 28168163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28168163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148159 + ... + 148348.

It is an arithmetic number, because the mean of its divisors is an integer number (4447620).

Almost surely, 2^28168165 is an apocalyptic number.

It is an amenable number.

28168165 is a deficient number, since it is larger than the sum of its proper divisors (7412795).

28168165 is a wasteful number, since it uses less digits than its factorization.

28168165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296531.

The product of its digits is 23040, while the sum is 37.

The square root of 28168165 is about 5307.3689338504. The cubic root of 28168165 is about 304.2655984767.

The spelling of 28168165 in words is "twenty-eight million, one hundred sixty-eight thousand, one hundred sixty-five".