28160843 has 4 divisors (see below), whose sum is σ = 28410168. Its totient is φ = 27911520.

The previous prime is 28160819. The next prime is 28160887. The reversal of 28160843 is 34806182.

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

It is a cyclic number.

It is not a de Polignac number, because 28160843 - 2⁶ = 28160779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28160813) 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, 124493 + ... + 124718.

It is an arithmetic number, because the mean of its divisors is an integer number (7102542).

Almost surely, 2^28160843 is an apocalyptic number.

28160843 is a deficient number, since it is larger than the sum of its proper divisors (249325).

28160843 is a wasteful number, since it uses less digits than its factorization.

28160843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249324.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 28160843 is about 5306.6790933690. The cubic root of 28160843 is about 304.2392327103.

The spelling of 28160843 in words is "twenty-eight million, one hundred sixty thousand, eight hundred forty-three".