13905906728 has 32 divisors (see below), whose sum is σ = 29825765760. Its totient is φ = 5954195520.

The previous prime is 13905906719. The next prime is 13905906757. The reversal of 13905906728 is 82760950931.

13905906728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 52388 + ... + 174803.

It is an arithmetic number, because the mean of its divisors is an integer number (932055180).

Almost surely, 2^13905906728 is an apocalyptic number.

It is an amenable number.

13905906728 is an abundant number, since it is smaller than the sum of its proper divisors (15919859032).

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

13905906728 is a wasteful number, since it uses less digits than its factorization.

13905906728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228297 (or 228293 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 50.

The spelling of 13905906728 in words is "thirteen billion, nine hundred five million, nine hundred six thousand, seven hundred twenty-eight".