3956720 has 20 divisors (see below), whose sum is σ = 9199560. Its totient is φ = 1582656.

The previous prime is 3956681. The next prime is 3956737. The reversal of 3956720 is 276593.

It is a tau number, because it is divible by the number of its divisors (20).

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, 24650 + ... + 24809.

It is an arithmetic number, because the mean of its divisors is an integer number (459978).

Almost surely, 2^3956720 is an apocalyptic number.

It is an amenable number.

3956720 is an abundant number, since it is smaller than the sum of its proper divisors (5242840).

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

3956720 is a wasteful number, since it uses less digits than its factorization.

3956720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49472 (or 49466 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 3956720 is about 1989.1505724806. The cubic root of 3956720 is about 158.1655051498.

The spelling of 3956720 in words is "three million, nine hundred fifty-six thousand, seven hundred twenty".