28755882 has 24 divisors (see below), whose sum is σ = 63989796. Its totient is φ = 9326016.

The previous prime is 28755871. The next prime is 28755967. The reversal of 28755882 is 28855782.

It can be written as a sum of positive squares in 2 ways, for example, as 26532801 + 2223081 = 5151^2 + 1491^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20923 + ... + 22254.

Almost surely, 2^28755882 is an apocalyptic number.

28755882 is an abundant number, since it is smaller than the sum of its proper divisors (35233914).

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

28755882 is a wasteful number, since it uses less digits than its factorization.

28755882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43222 (or 43219 counting only the distinct ones).

The product of its digits is 358400, while the sum is 45.

The square root of 28755882 is about 5362.4511186583. The cubic root of 28755882 is about 306.3671742654.

It can be divided in two parts, 287 and 55882, that added together give a square (56169 = 237²).

The spelling of 28755882 in words is "twenty-eight million, seven hundred fifty-five thousand, eight hundred eighty-two".