11913564 has 24 divisors (see below), whose sum is σ = 29937040. Its totient is φ = 3665664.

The previous prime is 11913553. The next prime is 11913581. The reversal of 11913564 is 46531911.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 38029 + ... + 38340.

Almost surely, 2^11913564 is an apocalyptic number.

It is an amenable number.

11913564 is an abundant number, since it is smaller than the sum of its proper divisors (18023476).

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

11913564 is a wasteful number, since it uses less digits than its factorization.

11913564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76389 (or 76387 counting only the distinct ones).

The product of its digits is 3240, while the sum is 30.

The square root of 11913564 is about 3451.6031058046. The cubic root of 11913564 is about 228.3918316145.

The spelling of 11913564 in words is "eleven million, nine hundred thirteen thousand, five hundred sixty-four".