17728826916 has 24 divisors (see below), whose sum is σ = 41372735040. Its totient is φ = 5908827232.

The previous prime is 17728826887. The next prime is 17728826953. The reversal of 17728826916 is 61962882771.

It is a super-2 number, since 2×17728826916² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 745 + ... + 188303.

It is an arithmetic number, because the mean of its divisors is an integer number (1723863960).

Almost surely, 2^17728826916 is an apocalyptic number.

It is an amenable number.

17728826916 is an abundant number, since it is smaller than the sum of its proper divisors (23643908124).

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

17728826916 is a wasteful number, since it uses less digits than its factorization.

17728826916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195443 (or 195441 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 57.

The spelling of 17728826916 in words is "seventeen billion, seven hundred twenty-eight million, eight hundred twenty-six thousand, nine hundred sixteen".