28784692 has 6 divisors (see below), whose sum is σ = 50373218. Its totient is φ = 14392344.

The previous prime is 28784683. The next prime is 28784711. The reversal of 28784692 is 29648782.

It can be written as a sum of positive squares in only one way, i.e., 25948836 + 2835856 = 5094^2 + 1684^2 .

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 as a sum of consecutive naturals, namely, 3598083 + ... + 3598090.

Almost surely, 2^28784692 is an apocalyptic number.

It is an amenable number.

28784692 is a deficient number, since it is larger than the sum of its proper divisors (21588526).

28784692 is a wasteful number, since it uses less digits than its factorization.

28784692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7196177 (or 7196175 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

The square root of 28784692 is about 5365.1367177361. The cubic root of 28784692 is about 306.4694546991.

The spelling of 28784692 in words is "twenty-eight million, seven hundred eighty-four thousand, six hundred ninety-two".