8194776728 has 16 divisors (see below), whose sum is σ = 15375950280. Its totient is φ = 4094523328.

The previous prime is 8194776659. The next prime is 8194776731. The reversal of 8194776728 is 8276774918.

It is a congruent number.

It is an unprimeable number.

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, 345950 + ... + 368877.

Almost surely, 2^8194776728 is an apocalyptic number.

It is an amenable number.

8194776728 is a deficient number, since it is larger than the sum of its proper divisors (7181173552).

8194776728 is a wasteful number, since it uses less digits than its factorization.

8194776728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716266 (or 716262 counting only the distinct ones).

The product of its digits is 9483264, while the sum is 59.

The square root of 8194776728 is about 90525.0060922395. The cubic root of 8194776728 is about 2016.1014182990.

The spelling of 8194776728 in words is "eight billion, one hundred ninety-four million, seven hundred seventy-six thousand, seven hundred twenty-eight".