3957730 has 48 divisors (see below), whose sum is σ = 8532216. Its totient is φ = 1317120.

The previous prime is 3957713. The next prime is 3957743. The reversal of 3957730 is 377593.

It can be written as a sum of positive squares in 4 ways, for example, as 3286969 + 670761 = 1813^2 + 819^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19992 + ... + 20188.

Almost surely, 2^3957730 is an apocalyptic number.

3957730 is an abundant number, since it is smaller than the sum of its proper divisors (4574486).

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

3957730 is a wasteful number, since it uses less digits than its factorization.

3957730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 19845, while the sum is 34.

The square root of 3957730 is about 1989.4044334926. The cubic root of 3957730 is about 158.1789618825.

The spelling of 3957730 in words is "three million, nine hundred fifty-seven thousand, seven hundred thirty".