28322724171 has 12 divisors (see below), whose sum is σ = 43929123432. Its totient is φ = 16184413728.

The previous prime is 28322724139. The next prime is 28322724173. The reversal of 28322724171 is 17142722382.

It is not a de Polignac number, because 28322724171 - 2⁵ = 28322724139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28322724173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96335650 + ... + 96335943.

It is an arithmetic number, because the mean of its divisors is an integer number (3660760286).

Almost surely, 2^28322724171 is an apocalyptic number.

28322724171 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

28322724171 is a deficient number, since it is larger than the sum of its proper divisors (15606399261).

28322724171 is a wasteful number, since it uses less digits than its factorization.

28322724171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192671610 (or 192671603 counting only the distinct ones).

The product of its digits is 75264, while the sum is 39.

The spelling of 28322724171 in words is "twenty-eight billion, three hundred twenty-two million, seven hundred twenty-four thousand, one hundred seventy-one".