28345163 has 16 divisors (see below), whose sum is σ = 35610624. Its totient is φ = 21917760.

The previous prime is 28345159. The next prime is 28345201. The reversal of 28345163 is 36154382.

It is a cyclic number.

It is not a de Polignac number, because 28345163 - 2² = 28345159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28345363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9206 + ... + 11892.

It is an arithmetic number, because the mean of its divisors is an integer number (2225664).

Almost surely, 2^28345163 is an apocalyptic number.

28345163 is a deficient number, since it is larger than the sum of its proper divisors (7265461).

28345163 is a wasteful number, since it uses less digits than its factorization.

28345163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2842.

The product of its digits is 17280, while the sum is 32.

The square root of 28345163 is about 5324.0175619545. The cubic root of 28345163 is about 304.9015645795.

It can be divided in two parts, 2834 and 5163, that added together give a palindrome (7997).

The spelling of 28345163 in words is "twenty-eight million, three hundred forty-five thousand, one hundred sixty-three".