11972646 has 24 divisors (see below), whose sum is σ = 29646864. Its totient is φ = 3420720.

The previous prime is 11972633. The next prime is 11972651. The reversal of 11972646 is 64627911.

11972646 is a `hidden beast` number, since 1 + 1 + 9 + 7 + 2 + 646 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 11972646.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 47385 + ... + 47636.

It is an arithmetic number, because the mean of its divisors is an integer number (1235286).

Almost surely, 2^11972646 is an apocalyptic number.

11972646 is an abundant number, since it is smaller than the sum of its proper divisors (17674218).

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

11972646 is a wasteful number, since it uses less digits than its factorization.

11972646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95036 (or 95033 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 11972646 is about 3460.1511527678. The cubic root of 11972646 is about 228.7687577559.

The spelling of 11972646 in words is "eleven million, nine hundred seventy-two thousand, six hundred forty-six".