11028931728 has 20 divisors (see below), whose sum is σ = 28491407088. Its totient is φ = 3676310560.

The previous prime is 11028931723. The next prime is 11028931751. The reversal of 11028931728 is 82713982011.

It is a self number, because there is not a number n which added to its sum of digits gives 11028931728.

It is not an unprimeable number, because it can be changed into a prime (11028931723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114884658 + ... + 114884753.

Almost surely, 2^11028931728 is an apocalyptic number.

It is an amenable number.

11028931728 is an abundant number, since it is smaller than the sum of its proper divisors (17462475360).

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

11028931728 is a wasteful number, since it uses less digits than its factorization.

11028931728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229769422 (or 229769416 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 42.

The spelling of 11028931728 in words is "eleven billion, twenty-eight million, nine hundred thirty-one thousand, seven hundred twenty-eight".