11561912 has 8 divisors (see below), whose sum is σ = 21678600. Its totient is φ = 5780952.

The previous prime is 11561909. The next prime is 11561917. The reversal of 11561912 is 21916511.

11561912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (11561917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722612 + ... + 722627.

It is an arithmetic number, because the mean of its divisors is an integer number (2709825).

Almost surely, 2^11561912 is an apocalyptic number.

It is an amenable number.

11561912 is a deficient number, since it is larger than the sum of its proper divisors (10116688).

11561912 is a wasteful number, since it uses less digits than its factorization.

11561912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445245 (or 1445241 counting only the distinct ones).

The product of its digits is 540, while the sum is 26.

The square root of 11561912 is about 3400.2811648450. The cubic root of 11561912 is about 226.1222092058.

The spelling of 11561912 in words is "eleven million, five hundred sixty-one thousand, nine hundred twelve".