11721892 has 24 divisors (see below), whose sum is σ = 25247936. Its totient is φ = 4637088.

The previous prime is 11721889. The next prime is 11721893. The reversal of 11721892 is 29812711.

11721892 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (11721893) 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, 15738 + ... + 16465.

Almost surely, 2^11721892 is an apocalyptic number.

It is an amenable number.

11721892 is an abundant number, since it is smaller than the sum of its proper divisors (13526044).

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

11721892 is a wasteful number, since it uses less digits than its factorization.

11721892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32227 (or 32225 counting only the distinct ones).

The product of its digits is 2016, while the sum is 31.

The square root of 11721892 is about 3423.7248721239. The cubic root of 11721892 is about 227.1603723537.

The spelling of 11721892 in words is "eleven million, seven hundred twenty-one thousand, eight hundred ninety-two".