3970928 has 40 divisors (see below), whose sum is σ = 8780688. Its totient is φ = 1723392.

The previous prime is 3970903. The next prime is 3970949. The reversal of 3970928 is 8290793.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3970891 and 3970900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2975 + ... + 4097.

Almost surely, 2^3970928 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 3970928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4390344).

3970928 is an abundant number, since it is smaller than the sum of its proper divisors (4809760).

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

3970928 is a wasteful number, since it uses less digits than its factorization.

3970928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161 (or 1155 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 3970928 is about 1992.7187458344. The cubic root of 3970928 is about 158.3545953595.

The spelling of 3970928 in words is "three million, nine hundred seventy thousand, nine hundred twenty-eight".