28512876 has 96 divisors (see below), whose sum is σ = 82639872. Its totient is φ = 7464960.

The previous prime is 28512853. The next prime is 28512881. The reversal of 28512876 is 67821582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58305 + ... + 58791.

It is an arithmetic number, because the mean of its divisors is an integer number (860832).

Almost surely, 2^28512876 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28512876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41319936).

28512876 is an abundant number, since it is smaller than the sum of its proper divisors (54126996).

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

28512876 is a wasteful number, since it uses less digits than its factorization.

28512876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559 (or 557 counting only the distinct ones).

The product of its digits is 53760, while the sum is 39.

The square root of 28512876 is about 5339.7449377288. The cubic root of 28512876 is about 305.5017308509.

The spelling of 28512876 in words is "twenty-eight million, five hundred twelve thousand, eight hundred seventy-six".