28595165 has 4 divisors (see below), whose sum is σ = 34314204. Its totient is φ = 22876128.

The previous prime is 28595159. The next prime is 28595227. The reversal of 28595165 is 56159582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56159582 = 2 ⋅28079791.

It can be written as a sum of positive squares in 2 ways, for example, as 14853316 + 13741849 = 3854^2 + 3707^2 .

It is a cyclic number.

It is not a de Polignac number, because 28595165 - 2⁶ = 28595101 is a prime.

It is a super-2 number, since 2×28595165² = 1635366922754450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2859512 + ... + 2859521.

It is an arithmetic number, because the mean of its divisors is an integer number (8578551).

Almost surely, 2^28595165 is an apocalyptic number.

It is an amenable number.

28595165 is a deficient number, since it is larger than the sum of its proper divisors (5719039).

28595165 is an equidigital number, since it uses as much as digits as its factorization.

28595165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5719038.

The product of its digits is 108000, while the sum is 41.

The square root of 28595165 is about 5347.4447168718. Note that the first 3 decimals coincide. The cubic root of 28595165 is about 305.7953442375.

The spelling of 28595165 in words is "twenty-eight million, five hundred ninety-five thousand, one hundred sixty-five".