3975428 has 12 divisors (see below), whose sum is σ = 7145292. Its totient is φ = 1933920.

The previous prime is 3975383. The next prime is 3975437. The reversal of 3975428 is 8245793.

It can be written as a sum of positive squares in 2 ways, for example, as 1658944 + 2316484 = 1288^2 + 1522^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3975391 and 3975400.

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, 13283 + ... + 13578.

It is an arithmetic number, because the mean of its divisors is an integer number (595441).

Almost surely, 2^3975428 is an apocalyptic number.

It is an amenable number.

3975428 is a deficient number, since it is larger than the sum of its proper divisors (3169864).

3975428 is a wasteful number, since it uses less digits than its factorization.

3975428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26902 (or 26900 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 3975428 is about 1993.8475367991. The cubic root of 3975428 is about 158.4143905064.

The spelling of 3975428 in words is "three million, nine hundred seventy-five thousand, four hundred twenty-eight".