28522065 has 32 divisors (see below), whose sum is σ = 53617536. Its totient is φ = 12764160.

The previous prime is 28522009. The next prime is 28522069. The reversal of 28522065 is 56022582.

It is not a de Polignac number, because 28522065 - 2⁹ = 28521553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28522069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4504 + ... + 8793.

It is an arithmetic number, because the mean of its divisors is an integer number (1675548).

Almost surely, 2^28522065 is an apocalyptic number.

It is an amenable number.

28522065 is a deficient number, since it is larger than the sum of its proper divisors (25095471).

28522065 is a wasteful number, since it uses less digits than its factorization.

28522065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13329.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 28522065 is about 5340.6053027723. The cubic root of 28522065 is about 305.5345458955.

The spelling of 28522065 in words is "twenty-eight million, five hundred twenty-two thousand, sixty-five".