28207164308 has 12 divisors (see below), whose sum is σ = 49420142772. Its totient is φ = 14087123520.

The previous prime is 28207164259. The next prime is 28207164313. The reversal of 28207164308 is 80346170282.

It can be written as a sum of positive squares in 2 ways, for example, as 18495456004 + 9711708304 = 135998^2 + 98548^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4110803 + ... + 4117658.

It is an arithmetic number, because the mean of its divisors is an integer number (4118345231).

Almost surely, 2^28207164308 is an apocalyptic number.

It is an amenable number.

28207164308 is a deficient number, since it is larger than the sum of its proper divisors (21212978464).

28207164308 is a wasteful number, since it uses less digits than its factorization.

28207164308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8229322 (or 8229320 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The spelling of 28207164308 in words is "twenty-eight billion, two hundred seven million, one hundred sixty-four thousand, three hundred eight".