1197178728 has 32 divisors (see below), whose sum is σ = 2994972000. Its totient is φ = 398789568.

The previous prime is 1197178711. The next prime is 1197178729. The reversal of 1197178728 is 8278717911.

It is not an unprimeable number, because it can be changed into a prime (1197178729) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 21075 + ... + 53277.

It is an arithmetic number, because the mean of its divisors is an integer number (93592875).

Almost surely, 2^1197178728 is an apocalyptic number.

It is an amenable number.

1197178728 is an abundant number, since it is smaller than the sum of its proper divisors (1797793272).

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

1197178728 is a wasteful number, since it uses less digits than its factorization.

1197178728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33761 (or 33757 counting only the distinct ones).

The product of its digits is 395136, while the sum is 51.

The square root of 1197178728 is about 34600.2706347797. The cubic root of 1197178728 is about 1061.8251243295.

The spelling of 1197178728 in words is "one billion, one hundred ninety-seven million, one hundred seventy-eight thousand, seven hundred twenty-eight".