28259165 has 16 divisors (see below), whose sum is σ = 37604736. Its totient is φ = 20212800.

The previous prime is 28259159. The next prime is 28259167. The reversal of 28259165 is 56195282.

It is a de Polignac number, because none of the positive numbers 2^k-28259165 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28259167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 857 + ... + 7566.

It is an arithmetic number, because the mean of its divisors is an integer number (2350296).

Almost surely, 2^28259165 is an apocalyptic number.

It is an amenable number.

28259165 is a deficient number, since it is larger than the sum of its proper divisors (9345571).

28259165 is a wasteful number, since it uses less digits than its factorization.

28259165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8500.

The product of its digits is 43200, while the sum is 38.

The square root of 28259165 is about 5315.9350071272. The cubic root of 28259165 is about 304.5928994849.

The spelling of 28259165 in words is "twenty-eight million, two hundred fifty-nine thousand, one hundred sixty-five".