28577065 has 16 divisors (see below), whose sum is σ = 37889280. Its totient is φ = 20517120.

The previous prime is 28577053. The next prime is 28577077. The reversal of 28577065 is 56077582.

It is an interprime number because it is at equal distance from previous prime (28577053) and next prime (28577077).

It is not a de Polignac number, because 28577065 - 2⁷ = 28576937 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1057 + ... + 7633.

It is an arithmetic number, because the mean of its divisors is an integer number (2368080).

Almost surely, 2^28577065 is an apocalyptic number.

It is an amenable number.

28577065 is a deficient number, since it is larger than the sum of its proper divisors (9312215).

28577065 is a wasteful number, since it uses less digits than its factorization.

28577065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6672.

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 28577065 is about 5345.7520518632. The cubic root of 28577065 is about 305.7308104378.

The spelling of 28577065 in words is "twenty-eight million, five hundred seventy-seven thousand, sixty-five".