28964508 has 24 divisors (see below), whose sum is σ = 68693520. Its totient is φ = 9496320.

The previous prime is 28964497. The next prime is 28964539. The reversal of 28964508 is 80546982.

It is a self number, because there is not a number n which added to its sum of digits gives 28964508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19053 + ... + 20516.

It is an arithmetic number, because the mean of its divisors is an integer number (2862230).

Almost surely, 2^28964508 is an apocalyptic number.

It is an amenable number.

28964508 is an abundant number, since it is smaller than the sum of its proper divisors (39729012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28964508 is a wasteful number, since it uses less digits than its factorization.

28964508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39637 (or 39635 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 28964508 is about 5381.8684487824. The cubic root of 28964508 is about 307.1062950014.

The spelling of 28964508 in words is "twenty-eight million, nine hundred sixty-four thousand, five hundred eight".