11220764 has 24 divisors (see below), whose sum is σ = 20346480. Its totient is φ = 5410944.

The previous prime is 11220763. The next prime is 11220779. The reversal of 11220764 is 46702211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220761) 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 7 ways as a sum of consecutive naturals, for example, 14942 + ... + 15674.

It is an arithmetic number, because the mean of its divisors is an integer number (847770).

Almost surely, 2^11220764 is an apocalyptic number.

It is an amenable number.

11220764 is a deficient number, since it is larger than the sum of its proper divisors (9125716).

11220764 is a wasteful number, since it uses less digits than its factorization.

11220764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869 (or 867 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 11220764 is about 3349.7408855014. The cubic root of 11220764 is about 223.8759676861.

Adding to 11220764 its reverse (46702211), we get a palindrome (57922975).

The spelling of 11220764 in words is "eleven million, two hundred twenty thousand, seven hundred sixty-four".