11573964 has 36 divisors (see below), whose sum is σ = 30798040. Its totient is φ = 3654720.

The previous prime is 11573963. The next prime is 11573977. The reversal of 11573964 is 46937511.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (11573963) 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 in 11 ways as a sum of consecutive naturals, for example, 7777 + ... + 9144.

Almost surely, 2^11573964 is an apocalyptic number.

It is an amenable number.

11573964 is an abundant number, since it is smaller than the sum of its proper divisors (19224076).

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

11573964 is a wasteful number, since it uses less digits than its factorization.

11573964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16950 (or 16945 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 11573964 is about 3402.0529096415. The cubic root of 11573964 is about 226.2007509585.

The spelling of 11573964 in words is "eleven million, five hundred seventy-three thousand, nine hundred sixty-four".