11640344 has 8 divisors (see below), whose sum is σ = 21825660. Its totient is φ = 5820168.

The previous prime is 11640329. The next prime is 11640347. The reversal of 11640344 is 44304611.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11640347) by changing a digit.

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 as a sum of consecutive naturals, namely, 727514 + ... + 727529.

Almost surely, 2^11640344 is an apocalyptic number.

It is an amenable number.

11640344 is a deficient number, since it is larger than the sum of its proper divisors (10185316).

11640344 is a wasteful number, since it uses less digits than its factorization.

11640344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455049 (or 1455045 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 11640344 is about 3411.7948355668. The cubic root of 11640344 is about 226.6323688974.

Adding to 11640344 its reverse (44304611), we get a palindrome (55944955).

The spelling of 11640344 in words is "eleven million, six hundred forty thousand, three hundred forty-four".