3811928 has 16 divisors (see below), whose sum is σ = 7458480. Its totient is φ = 1823008.

The previous prime is 3811921. The next prime is 3811939. The reversal of 3811928 is 8291183.

It is a junction number, because it is equal to n+sod(n) for n = 3811894 and 3811903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3811921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10175 + ... + 10542.

It is an arithmetic number, because the mean of its divisors is an integer number (466155).

Almost surely, 2^3811928 is an apocalyptic number.

It is an amenable number.

3811928 is a deficient number, since it is larger than the sum of its proper divisors (3646552).

3811928 is a wasteful number, since it uses less digits than its factorization.

3811928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20746 (or 20742 counting only the distinct ones).

The product of its digits is 3456, while the sum is 32.

The square root of 3811928 is about 1952.4159392916. The cubic root of 3811928 is about 156.2121811404.

The spelling of 3811928 in words is "three million, eight hundred eleven thousand, nine hundred twenty-eight".