28516984 has 8 divisors (see below), whose sum is σ = 53469360. Its totient is φ = 14258488.

The previous prime is 28516979. The next prime is 28516991. The reversal of 28516984 is 48961582.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 28516984.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1782304 + ... + 1782319.

It is an arithmetic number, because the mean of its divisors is an integer number (6683670).

Almost surely, 2^28516984 is an apocalyptic number.

It is an amenable number.

28516984 is a deficient number, since it is larger than the sum of its proper divisors (24952376).

28516984 is a wasteful number, since it uses less digits than its factorization.

28516984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3564629 (or 3564625 counting only the distinct ones).

The product of its digits is 138240, while the sum is 43.

The square root of 28516984 is about 5340.1295864426. The cubic root of 28516984 is about 305.5164018934.

The spelling of 28516984 in words is "twenty-eight million, five hundred sixteen thousand, nine hundred eighty-four".