3928928 has 24 divisors (see below), whose sum is σ = 7869960. Its totient is φ = 1930240.

The previous prime is 3928913. The next prime is 3928931. The reversal of 3928928 is 8298293.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 848 + ... + 2928.

It is an arithmetic number, because the mean of its divisors is an integer number (327915).

Almost surely, 2^3928928 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 3928928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3934980).

3928928 is an abundant number, since it is smaller than the sum of its proper divisors (3941032).

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

3928928 is a wasteful number, since it uses less digits than its factorization.

3928928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150 (or 2142 counting only the distinct ones).

The product of its digits is 62208, while the sum is 41.

The square root of 3928928 is about 1982.1523654856. The cubic root of 3928928 is about 157.7943165600.

The spelling of 3928928 in words is "three million, nine hundred twenty-eight thousand, nine hundred twenty-eight".