11680326 has 144 divisors (see below), whose sum is σ = 33611760. Its totient is φ = 2903040.

The previous prime is 11680313. The next prime is 11680337. The reversal of 11680326 is 62308611.

It is a self number, because there is not a number n which added to its sum of digits gives 11680326.

It is a congruent number.

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 71 ways as a sum of consecutive naturals, for example, 284866 + ... + 284906.

It is an arithmetic number, because the mean of its divisors is an integer number (233415).

Almost surely, 2^11680326 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11680326, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16805880).

11680326 is an abundant number, since it is smaller than the sum of its proper divisors (21931434).

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

11680326 is a wasteful number, since it uses less digits than its factorization.

11680326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 11680326 is about 3417.6491920617. The cubic root of 11680326 is about 226.8915496886.

Adding to 11680326 its reverse (62308611), we get a palindrome (73988937).

The spelling of 11680326 in words is "eleven million, six hundred eighty thousand, three hundred twenty-six".