11571944 has 32 divisors (see below), whose sum is σ = 23034240. Its totient is φ = 5438400.

The previous prime is 11571941. The next prime is 11571949. The reversal of 11571944 is 44917511.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11571944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11571941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10709 + ... + 11739.

It is an arithmetic number, because the mean of its divisors is an integer number (719820).

Almost surely, 2^11571944 is an apocalyptic number.

It is an amenable number.

11571944 is a deficient number, since it is larger than the sum of its proper divisors (11462296).

11571944 is a wasteful number, since it uses less digits than its factorization.

11571944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121 (or 1117 counting only the distinct ones).

The product of its digits is 5040, while the sum is 32.

The square root of 11571944 is about 3401.7560171182. The cubic root of 11571944 is about 226.1875906128.

The spelling of 11571944 in words is "eleven million, five hundred seventy-one thousand, nine hundred forty-four".