3925128 has 32 divisors (see below), whose sum is σ = 9963360. Its totient is φ = 1288320.

The previous prime is 3925123. The next prime is 3925133. The reversal of 3925128 is 8215293.

It is a happy number.

3925128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3925123) and next prime (3925133).

It is a junction number, because it is equal to n+sod(n) for n = 3925095 and 3925104.

It is not an unprimeable number, because it can be changed into a prime (3925123) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 388 + ... + 2828.

It is an arithmetic number, because the mean of its divisors is an integer number (311355).

Almost surely, 2^3925128 is an apocalyptic number.

It is an amenable number.

3925128 is an abundant number, since it is smaller than the sum of its proper divisors (6038232).

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

3925128 is a wasteful number, since it uses less digits than its factorization.

3925128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2517 (or 2513 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 3925128 is about 1981.1935796383. The cubic root of 3925128 is about 157.7434280546.

The spelling of 3925128 in words is "three million, nine hundred twenty-five thousand, one hundred twenty-eight".