28065508 has 12 divisors (see below), whose sum is σ = 51699760. Its totient is φ = 13294152.

The previous prime is 28065473. The next prime is 28065511. The reversal of 28065508 is 80556082.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184566 + ... + 184717.

Almost surely, 2^28065508 is an apocalyptic number.

It is an amenable number.

28065508 is a deficient number, since it is larger than the sum of its proper divisors (23634252).

28065508 is a wasteful number, since it uses less digits than its factorization.

28065508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369306 (or 369304 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 28065508 is about 5297.6889300902. The cubic root of 28065508 is about 303.8955233088.

The spelling of 28065508 in words is "twenty-eight million, sixty-five thousand, five hundred eight".