28784068 has 24 divisors (see below), whose sum is σ = 51367680. Its totient is φ = 14110560.

The previous prime is 28784057. The next prime is 28784081. The reversal of 28784068 is 86048782.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

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, 59853 + ... + 60331.

It is an arithmetic number, because the mean of its divisors is an integer number (2140320).

Almost surely, 2^28784068 is an apocalyptic number.

It is an amenable number.

28784068 is a deficient number, since it is larger than the sum of its proper divisors (22583612).

28784068 is a wasteful number, since it uses less digits than its factorization.

28784068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747 (or 745 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 43.

The square root of 28784068 is about 5365.0785641964. The cubic root of 28784068 is about 306.4672401155.

The spelling of 28784068 in words is "twenty-eight million, seven hundred eighty-four thousand, sixty-eight".