28994568 has 32 divisors (see below), whose sum is σ = 72619200. Its totient is φ = 9647168.

The previous prime is 28994549. The next prime is 28994593. The reversal of 28994568 is 86549982.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 28994568.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22978 + ... + 24206.

It is an arithmetic number, because the mean of its divisors is an integer number (2269350).

Almost surely, 2^28994568 is an apocalyptic number.

It is an amenable number.

28994568 is an abundant number, since it is smaller than the sum of its proper divisors (43624632).

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

28994568 is a wasteful number, since it uses less digits than its factorization.

28994568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221 (or 2217 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 51.

The square root of 28994568 is about 5384.6604349764. The cubic root of 28994568 is about 307.2124988133.

The spelling of 28994568 in words is "twenty-eight million, nine hundred ninety-four thousand, five hundred sixty-eight".