28683868 has 6 divisors (see below), whose sum is σ = 50196776. Its totient is φ = 14341932.

The previous prime is 28683833. The next prime is 28683877. The reversal of 28683868 is 86838682.

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, 3585480 + ... + 3585487.

Almost surely, 2^28683868 is an apocalyptic number.

It is an amenable number.

28683868 is a deficient number, since it is larger than the sum of its proper divisors (21512908).

28683868 is a wasteful number, since it uses less digits than its factorization.

28683868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7170971 (or 7170969 counting only the distinct ones).

The product of its digits is 884736, while the sum is 49.

The square root of 28683868 is about 5355.7322561906. The cubic root of 28683868 is about 306.1112130821. Note that the first 3 decimals are identical.

The spelling of 28683868 in words is "twenty-eight million, six hundred eighty-three thousand, eight hundred sixty-eight".