28163694075 has 24 divisors (see below), whose sum is σ = 50797064256. Its totient is φ = 13655124000.

The previous prime is 28163694071. The next prime is 28163694101. The reversal of 28163694075 is 57049636182.

It is not a de Polignac number, because 28163694075 - 2² = 28163694071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28163694071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17068081 + ... + 17069730.

It is an arithmetic number, because the mean of its divisors is an integer number (2116544344).

It is a 1-persistent number, because it is pandigital, but 2⋅28163694075 = 56327388150 is not.

Almost surely, 2^28163694075 is an apocalyptic number.

28163694075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28163694075 is a deficient number, since it is larger than the sum of its proper divisors (22633370181).

28163694075 is a wasteful number, since it uses less digits than its factorization.

28163694075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34137835 (or 34137830 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 28163694075 in words is "twenty-eight billion, one hundred sixty-three million, six hundred ninety-four thousand, seventy-five".