28545874 has 16 divisors (see below), whose sum is σ = 49291200. Its totient is φ = 12145104.

The previous prime is 28545859. The next prime is 28545887. The reversal of 28545874 is 47854582.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28545874.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5389 + ... + 9280.

It is an arithmetic number, because the mean of its divisors is an integer number (3080700).

Almost surely, 2^28545874 is an apocalyptic number.

28545874 is a deficient number, since it is larger than the sum of its proper divisors (20745326).

28545874 is a wasteful number, since it uses less digits than its factorization.

28545874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14817.

The product of its digits is 358400, while the sum is 43.

The square root of 28545874 is about 5342.8338922336. The cubic root of 28545874 is about 305.6195379745.

The spelling of 28545874 in words is "twenty-eight million, five hundred forty-five thousand, eight hundred seventy-four".