28168683 has 4 divisors (see below), whose sum is σ = 37558248. Its totient is φ = 18779120.

The previous prime is 28168669. The next prime is 28168687. The reversal of 28168683 is 38686182.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28168683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28168687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4694778 + ... + 4694783.

It is an arithmetic number, because the mean of its divisors is an integer number (9389562).

Almost surely, 2^28168683 is an apocalyptic number.

28168683 is a deficient number, since it is larger than the sum of its proper divisors (9389565).

28168683 is an equidigital number, since it uses as much as digits as its factorization.

28168683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9389564.

The product of its digits is 110592, while the sum is 42.

The square root of 28168683 is about 5307.4177337006. The cubic root of 28168683 is about 304.2674635681.

The spelling of 28168683 in words is "twenty-eight million, one hundred sixty-eight thousand, six hundred eighty-three".