1173716728 has 16 divisors (see below), whose sum is σ = 2218049280. Its totient is φ = 582236928.

The previous prime is 1173716723. The next prime is 1173716729. The reversal of 1173716728 is 8276173711.

It is a happy number.

It is a super-2 number, since 2×1173716728² = 2755221915174051968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1173716723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 576601 + ... + 578632.

It is an arithmetic number, because the mean of its divisors is an integer number (138628080).

Almost surely, 2^1173716728 is an apocalyptic number.

It is an amenable number.

1173716728 is a deficient number, since it is larger than the sum of its proper divisors (1044332552).

1173716728 is a wasteful number, since it uses less digits than its factorization.

1173716728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155366 (or 1155362 counting only the distinct ones).

The product of its digits is 98784, while the sum is 43.

The square root of 1173716728 is about 34259.5494424547. The cubic root of 1173716728 is about 1054.8428531386.

The spelling of 1173716728 in words is "one billion, one hundred seventy-three million, seven hundred sixteen thousand, seven hundred twenty-eight".