28173268107 has 12 divisors (see below), whose sum is σ = 40697439120. Its totient is φ = 18780924048.

The previous prime is 28173268093. The next prime is 28173268117. The reversal of 28173268107 is 70186237182.

28173268107 is a `hidden beast` number, since 281 + 7 + 3 + 268 + 107 = 666.

It is not a de Polignac number, because 28173268107 - 2⁶ = 28173268043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28173268117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49618 + ... + 242504.

It is an arithmetic number, because the mean of its divisors is an integer number (3391453260).

Almost surely, 2^28173268107 is an apocalyptic number.

28173268107 is a deficient number, since it is larger than the sum of its proper divisors (12524171013).

28173268107 is a wasteful number, since it uses less digits than its factorization.

28173268107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209122 (or 209119 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The spelling of 28173268107 in words is "twenty-eight billion, one hundred seventy-three million, two hundred sixty-eight thousand, one hundred seven".