28904715163 has 4 divisors (see below), whose sum is σ = 28908028440. Its totient is φ = 28901401888.

The previous prime is 28904715139. The next prime is 28904715233. The reversal of 28904715163 is 36151740982.

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-28904715163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28904715863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1643518 + ... + 1661011.

It is an arithmetic number, because the mean of its divisors is an integer number (7227007110).

It is a 1-persistent number, because it is pandigital, but 2⋅28904715163 = 57809430326 is not.

Almost surely, 2^28904715163 is an apocalyptic number.

28904715163 is a deficient number, since it is larger than the sum of its proper divisors (3313277).

28904715163 is an equidigital number, since it uses as much as digits as its factorization.

28904715163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3313276.

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 28904715163 in words is "twenty-eight billion, nine hundred four million, seven hundred fifteen thousand, one hundred sixty-three".