28545873 has 16 divisors (see below), whose sum is σ = 41160960. Its totient is φ = 17528576.

The previous prime is 28545859. The next prime is 28545887. The reversal of 28545873 is 37854582.

It is an interprime number because it is at equal distance from previous prime (28545859) and next prime (28545887).

It is a cyclic number.

It is not a de Polignac number, because 28545873 - 2⁵ = 28545841 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (28545893) 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 15 ways as a sum of consecutive naturals, for example, 3558 + ... + 8351.

It is an arithmetic number, because the mean of its divisors is an integer number (2572560).

Almost surely, 2^28545873 is an apocalyptic number.

It is an amenable number.

28545873 is a deficient number, since it is larger than the sum of its proper divisors (12615087).

28545873 is a wasteful number, since it uses less digits than its factorization.

28545873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11976.

The product of its digits is 268800, while the sum is 42.

The square root of 28545873 is about 5342.8337986503. The cubic root of 28545873 is about 305.6195344057.

The spelling of 28545873 in words is "twenty-eight million, five hundred forty-five thousand, eight hundred seventy-three".