3839728 has 20 divisors (see below), whose sum is σ = 7613848. Its totient is φ = 1874880.

The previous prime is 3839713. The next prime is 3839747. The reversal of 3839728 is 8279383.

It is a happy number.

It is a super-2 number, since 2×3839728² = 29487022227968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2103 + ... + 3478.

Almost surely, 2^3839728 is an apocalyptic number.

It is an amenable number.

3839728 is a deficient number, since it is larger than the sum of its proper divisors (3774120).

3839728 is a wasteful number, since it uses less digits than its factorization.

3839728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5632 (or 5626 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 3839728 is about 1959.5223907881. The cubic root of 3839728 is about 156.5910081845.

The spelling of 3839728 in words is "three million, eight hundred thirty-nine thousand, seven hundred twenty-eight".