197392826728 has 16 divisors (see below), whose sum is σ = 372595522500. Its totient is φ = 98034020736.

The previous prime is 197392826671. The next prime is 197392826777. The reversal of 197392826728 is 827628293791.

It is a happy number.

197392826728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 167429909124 + 29962917604 = 409182^2 + 173098^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 197392826728.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82797813 + ... + 82800196.

Almost surely, 2^197392826728 is an apocalyptic number.

It is an amenable number.

197392826728 is a deficient number, since it is larger than the sum of its proper divisors (175202695772).

197392826728 is a wasteful number, since it uses less digits than its factorization.

197392826728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165598164 (or 165598160 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 64.

The spelling of 197392826728 in words is "one hundred ninety-seven billion, three hundred ninety-two million, eight hundred twenty-six thousand, seven hundred twenty-eight".