11945872 has 20 divisors (see below), whose sum is σ = 23236236. Its totient is φ = 5949440.

The previous prime is 11945867. The next prime is 11945897. The reversal of 11945872 is 27854911.

It can be written as a sum of positive squares in 2 ways, for example, as 7929856 + 4016016 = 2816^2 + 2004^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3168 + ... + 5824.

Almost surely, 2^11945872 is an apocalyptic number.

It is an amenable number.

11945872 is a deficient number, since it is larger than the sum of its proper divisors (11290364).

11945872 is a wasteful number, since it uses less digits than its factorization.

11945872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2946 (or 2940 counting only the distinct ones).

The product of its digits is 20160, while the sum is 37.

The square root of 11945872 is about 3456.2800812434. The cubic root of 11945872 is about 228.5981013516.

The spelling of 11945872 in words is "eleven million, nine hundred forty-five thousand, eight hundred seventy-two".