11722928 has 80 divisors (see below), whose sum is σ = 28283904. Its totient is φ = 4592640.

The previous prime is 11722927. The next prime is 11722933. The reversal of 11722928 is 82922711.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11722894 and 11722903.

It is not an unprimeable number, because it can be changed into a prime (11722927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89423 + ... + 89553.

Almost surely, 2^11722928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11722928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14141952).

11722928 is an abundant number, since it is smaller than the sum of its proper divisors (16560976).

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

11722928 is a wasteful number, since it uses less digits than its factorization.

11722928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 204 counting only the distinct ones).

The product of its digits is 4032, while the sum is 32.

The square root of 11722928 is about 3423.8761659850. The cubic root of 11722928 is about 227.1670644250.

The spelling of 11722928 in words is "eleven million, seven hundred twenty-two thousand, nine hundred twenty-eight".