28715061108 has 12 divisors (see below), whose sum is σ = 67001809280. Its totient is φ = 9571687032.

The previous prime is 28715061079. The next prime is 28715061149. The reversal of 28715061108 is 80116051782.

It is a tau number, because it is divible by the number of its divisors (12).

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, 1196460868 + ... + 1196460891.

Almost surely, 2^28715061108 is an apocalyptic number.

It is an amenable number.

28715061108 is an abundant number, since it is smaller than the sum of its proper divisors (38286748172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28715061108 is a wasteful number, since it uses less digits than its factorization.

28715061108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392921766 (or 2392921764 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 39.

The spelling of 28715061108 in words is "twenty-eight billion, seven hundred fifteen million, sixty-one thousand, one hundred eight".