28516504 has 16 divisors (see below), whose sum is σ = 55793520. Its totient is φ = 13638240.

The previous prime is 28516493. The next prime is 28516507. The reversal of 28516504 is 40561582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28516507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77307 + ... + 77674.

It is an arithmetic number, because the mean of its divisors is an integer number (3487095).

Almost surely, 2^28516504 is an apocalyptic number.

It is an amenable number.

28516504 is a deficient number, since it is larger than the sum of its proper divisors (27277016).

28516504 is a wasteful number, since it uses less digits than its factorization.

28516504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155010 (or 155006 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 28516504 is about 5340.0846435239. The cubic root of 28516504 is about 305.5146877255.

The spelling of 28516504 in words is "twenty-eight million, five hundred sixteen thousand, five hundred four".