1168436728 has 16 divisors (see below), whose sum is σ = 2232155880. Its totient is φ = 573195168.

The previous prime is 1168436723. The next prime is 1168436803. The reversal of 1168436728 is 8276348611.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1168436723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1377450 + ... + 1378297.

Almost surely, 2^1168436728 is an apocalyptic number.

It is an amenable number.

1168436728 is a deficient number, since it is larger than the sum of its proper divisors (1063719152).

1168436728 is a wasteful number, since it uses less digits than its factorization.

1168436728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2755806 (or 2755802 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

The square root of 1168436728 is about 34182.4037773823. The cubic root of 1168436728 is about 1053.2587279140.

The spelling of 1168436728 in words is "one billion, one hundred sixty-eight million, four hundred thirty-six thousand, seven hundred twenty-eight".