11133865 has 16 divisors (see below), whose sum is σ = 13754880. Its totient is φ = 8648640.

The previous prime is 11133841. The next prime is 11133907. The reversal of 11133865 is 56833111.

It is not a de Polignac number, because 11133865 - 2⁵ = 11133833 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 27847 + ... + 28243.

It is an arithmetic number, because the mean of its divisors is an integer number (859680).

Almost surely, 2^11133865 is an apocalyptic number.

It is an amenable number.

11133865 is a deficient number, since it is larger than the sum of its proper divisors (2621015).

11133865 is an equidigital number, since it uses as much as digits as its factorization.

11133865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552.

The product of its digits is 2160, while the sum is 28.

The square root of 11133865 is about 3336.7446710829. The cubic root of 11133865 is about 223.2965348643.

Adding to 11133865 its reverse (56833111), we get a palindrome (67966976).

The spelling of 11133865 in words is "eleven million, one hundred thirty-three thousand, eight hundred sixty-five".