28766828 has 12 divisors (see below), whose sum is σ = 51513000. Its totient is φ = 14048832.

The previous prime is 28766827. The next prime is 28766831. The reversal of 28766828 is 82866782.

It is not an unprimeable number, because it can be changed into a prime (28766827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83453 + ... + 83796.

It is an arithmetic number, because the mean of its divisors is an integer number (4292750).

Almost surely, 2^28766828 is an apocalyptic number.

It is an amenable number.

28766828 is a deficient number, since it is larger than the sum of its proper divisors (22746172).

28766828 is a wasteful number, since it uses less digits than its factorization.

28766828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167296 (or 167294 counting only the distinct ones).

The product of its digits is 516096, while the sum is 47.

The square root of 28766828 is about 5363.4716369158. The cubic root of 28766828 is about 306.4060424834.

The spelling of 28766828 in words is "twenty-eight million, seven hundred sixty-six thousand, eight hundred twenty-eight".