28843976 has 32 divisors (see below), whose sum is σ = 65064000. Its totient is φ = 11710656.

The previous prime is 28843949. The next prime is 28843993. The reversal of 28843976 is 67934882.

It is a self number, because there is not a number n which added to its sum of digits gives 28843976.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 12491 + ... + 14618.

It is an arithmetic number, because the mean of its divisors is an integer number (2033250).

Almost surely, 2^28843976 is an apocalyptic number.

It is an amenable number.

28843976 is an abundant number, since it is smaller than the sum of its proper divisors (36220024).

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

28843976 is a wasteful number, since it uses less digits than its factorization.

28843976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27141 (or 27137 counting only the distinct ones).

The product of its digits is 580608, while the sum is 47.

The square root of 28843976 is about 5370.6588050257. The cubic root of 28843976 is about 306.6797085401.

The spelling of 28843976 in words is "twenty-eight million, eight hundred forty-three thousand, nine hundred seventy-six".