11217328 has 20 divisors (see below), whose sum is σ = 21796720. Its totient is φ = 5592384.

The previous prime is 11217317. The next prime is 11217343. The reversal of 11217328 is 82371211.

It is a happy 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 3 ways as a sum of consecutive naturals, for example, 6226 + ... + 7822.

It is an arithmetic number, because the mean of its divisors is an integer number (1089836).

Almost surely, 2^11217328 is an apocalyptic number.

It is an amenable number.

11217328 is a deficient number, since it is larger than the sum of its proper divisors (10579392).

11217328 is a wasteful number, since it uses less digits than its factorization.

11217328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2044 (or 2038 counting only the distinct ones).

The product of its digits is 672, while the sum is 25.

The square root of 11217328 is about 3349.2279707419. The cubic root of 11217328 is about 223.8531137355.

Adding to 11217328 its reverse (82371211), we get a palindrome (93588539).

The spelling of 11217328 in words is "eleven million, two hundred seventeen thousand, three hundred twenty-eight".