11561944 has 16 divisors (see below), whose sum is σ = 21762720. Its totient is φ = 5758560.

The previous prime is 11561917. The next prime is 11561971. The reversal of 11561944 is 44916511.

11561944 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11561917) and next prime (11561971).

It is a congruent number.

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, 499 + ... + 4834.

It is an arithmetic number, because the mean of its divisors is an integer number (1360170).

Almost surely, 2^11561944 is an apocalyptic number.

It is an amenable number.

11561944 is a deficient number, since it is larger than the sum of its proper divisors (10200776).

11561944 is a wasteful number, since it uses less digits than its factorization.

11561944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5610 (or 5606 counting only the distinct ones).

The product of its digits is 4320, while the sum is 31.

The square root of 11561944 is about 3400.2858703350. The cubic root of 11561944 is about 226.1224178190.

The spelling of 11561944 in words is "eleven million, five hundred sixty-one thousand, nine hundred forty-four".