28965678 has 32 divisors (see below), whose sum is σ = 66375936. Its totient is φ = 8254848.

The previous prime is 28965661. The next prime is 28965679. The reversal of 28965678 is 87656982.

It is a self number, because there is not a number n which added to its sum of digits gives 28965678.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28965679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24325 + ... + 25487.

It is an arithmetic number, because the mean of its divisors is an integer number (2074248).

Almost surely, 2^28965678 is an apocalyptic number.

28965678 is an abundant number, since it is smaller than the sum of its proper divisors (37410258).

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

28965678 is a wasteful number, since it uses less digits than its factorization.

28965678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1768.

The product of its digits is 1451520, while the sum is 51.

The square root of 28965678 is about 5381.9771459938. The cubic root of 28965678 is about 307.1104300567.

The spelling of 28965678 in words is "twenty-eight million, nine hundred sixty-five thousand, six hundred seventy-eight".