28857683 has 8 divisors (see below), whose sum is σ = 29976576. Its totient is φ = 27750600.

The previous prime is 28857643. The next prime is 28857701. The reversal of 28857683 is 38675882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28857683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28857623) by changing a digit.

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, 2198 + ... + 7908.

It is an arithmetic number, because the mean of its divisors is an integer number (3747072).

Almost surely, 2^28857683 is an apocalyptic number.

28857683 is a deficient number, since it is larger than the sum of its proper divisors (1118893).

28857683 is a wasteful number, since it uses less digits than its factorization.

28857683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5905.

The product of its digits is 645120, while the sum is 47.

The square root of 28857683 is about 5371.9347538852. The cubic root of 28857683 is about 306.7282801270.

The spelling of 28857683 in words is "twenty-eight million, eight hundred fifty-seven thousand, six hundred eighty-three".