11821928 has 16 divisors (see below), whose sum is σ = 22382880. Its totient is φ = 5853168.

The previous prime is 11821913. The next prime is 11821961. The reversal of 11821928 is 82912811.

It is a junction number, because it is equal to n+sod(n) for n = 11821894 and 11821903.

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, 6350 + ... + 7997.

It is an arithmetic number, because the mean of its divisors is an integer number (1398930).

Almost surely, 2^11821928 is an apocalyptic number.

It is an amenable number.

11821928 is a deficient number, since it is larger than the sum of its proper divisors (10560952).

11821928 is a wasteful number, since it uses less digits than its factorization.

11821928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14456 (or 14452 counting only the distinct ones).

The product of its digits is 2304, while the sum is 32.

The square root of 11821928 is about 3438.3030698297. The cubic root of 11821928 is about 227.8047471713.

The spelling of 11821928 in words is "eleven million, eight hundred twenty-one thousand, nine hundred twenty-eight".