28280068 has 12 divisors (see below), whose sum is σ = 50641360. Its totient is φ = 13811112.

The previous prime is 28280047. The next prime is 28280069. The reversal of 28280068 is 86008282.

It is a happy number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28280069) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 82038 + ... + 82381.

Almost surely, 2^28280068 is an apocalyptic number.

It is an amenable number.

28280068 is a deficient number, since it is larger than the sum of its proper divisors (22361292).

28280068 is a wasteful number, since it uses less digits than its factorization.

28280068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164466 (or 164464 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 28280068 is about 5317.9007136275. The cubic root of 28280068 is about 304.6679823378.

The spelling of 28280068 in words is "twenty-eight million, two hundred eighty thousand, sixty-eight".