12197806928 has 40 divisors (see below), whose sum is σ = 24849038280. Its totient is φ = 5792048640.

The previous prime is 12197806927. The next prime is 12197806931. The reversal of 12197806928 is 82960879121.

It can be written as a sum of positive squares in 4 ways, for example, as 214563904 + 11983243024 = 14648^2 + 109468^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12197806928.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12197806927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187175 + ... + 243782.

It is an arithmetic number, because the mean of its divisors is an integer number (621225957).

Almost surely, 2^12197806928 is an apocalyptic number.

It is an amenable number.

12197806928 is an abundant number, since it is smaller than the sum of its proper divisors (12651231352).

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

12197806928 is a wasteful number, since it uses less digits than its factorization.

12197806928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431055 (or 431049 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 53.

The spelling of 12197806928 in words is "twelve billion, one hundred ninety-seven million, eight hundred six thousand, nine hundred twenty-eight".