11538564 has 12 divisors (see below), whose sum is σ = 26923344. Its totient is φ = 3846184.

The previous prime is 11538557. The next prime is 11538601. The reversal of 11538564 is 46583511.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480762 + ... + 480785.

It is an arithmetic number, because the mean of its divisors is an integer number (2243612).

Almost surely, 2^11538564 is an apocalyptic number.

It is an amenable number.

11538564 is an abundant number, since it is smaller than the sum of its proper divisors (15384780).

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

11538564 is a wasteful number, since it uses less digits than its factorization.

11538564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961554 (or 961552 counting only the distinct ones).

The product of its digits is 14400, while the sum is 33.

The square root of 11538564 is about 3396.8461843304. The cubic root of 11538564 is about 225.9698970530.

The spelling of 11538564 in words is "eleven million, five hundred thirty-eight thousand, five hundred sixty-four".