28268392 has 8 divisors (see below), whose sum is σ = 53003250. Its totient is φ = 14134192.

The previous prime is 28268381. The next prime is 28268411. The reversal of 28268392 is 29386282.

It can be written as a sum of positive squares in only one way, i.e., 19589476 + 8678916 = 4426^2 + 2946^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1766767 + ... + 1766782.

Almost surely, 2^28268392 is an apocalyptic number.

It is an amenable number.

28268392 is a deficient number, since it is larger than the sum of its proper divisors (24734858).

28268392 is a wasteful number, since it uses less digits than its factorization.

28268392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3533555 (or 3533551 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 28268392 is about 5316.8027986752. The cubic root of 28268392 is about 304.6260471128.

The spelling of 28268392 in words is "twenty-eight million, two hundred sixty-eight thousand, three hundred ninety-two".