28120876 has 12 divisors (see below), whose sum is σ = 56241808. Its totient is φ = 12051792.

The previous prime is 28120871. The next prime is 28120877. The reversal of 28120876 is 67802182.

28120876 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (28120871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502131 + ... + 502186.

Almost surely, 2^28120876 is an apocalyptic number.

It is an amenable number.

28120876 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28120876 is a wasteful number, since it uses less digits than its factorization.

28120876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004328 (or 1004326 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 28120876 is about 5302.9120301962. The cubic root of 28120876 is about 304.0952350515.

The spelling of 28120876 in words is "twenty-eight million, one hundred twenty thousand, eight hundred seventy-six".