11680728 has 16 divisors (see below), whose sum is σ = 29201880. Its totient is φ = 3893568.

The previous prime is 11680727. The next prime is 11680733. The reversal of 11680728 is 82708611.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11680727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243325 + ... + 243372.

Almost surely, 2^11680728 is an apocalyptic number.

It is an amenable number.

11680728 is an abundant number, since it is smaller than the sum of its proper divisors (17521152).

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

11680728 is a wasteful number, since it uses less digits than its factorization.

11680728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486706 (or 486702 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 11680728 is about 3417.7080039114. The cubic root of 11680728 is about 226.8941526227.

The spelling of 11680728 in words is "eleven million, six hundred eighty thousand, seven hundred twenty-eight".