11347730728 has 16 divisors (see below), whose sum is σ = 21311488980. Its totient is φ = 5664667008.

The previous prime is 11347730717. The next prime is 11347730743. The reversal of 11347730728 is 82703774311.

It can be written as a sum of positive squares in 2 ways, for example, as 10278309924 + 1069420804 = 101382^2 + 32702^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1144551 + ... + 1154422.

Almost surely, 2^11347730728 is an apocalyptic number.

It is an amenable number.

11347730728 is a deficient number, since it is larger than the sum of its proper divisors (9963758252).

11347730728 is a wasteful number, since it uses less digits than its factorization.

11347730728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2299596 (or 2299592 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 43.

The spelling of 11347730728 in words is "eleven billion, three hundred forty-seven million, seven hundred thirty thousand, seven hundred twenty-eight".