3970720 has 96 divisors (see below), whose sum is σ = 10668672. Its totient is φ = 1385472.

The previous prime is 3970711. The next prime is 3970723. The reversal of 3970720 is 270793.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3970723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47799 + ... + 47881.

It is an arithmetic number, because the mean of its divisors is an integer number (111132).

Almost surely, 2^3970720 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 3970720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5334336).

3970720 is an abundant number, since it is smaller than the sum of its proper divisors (6697952).

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

3970720 is a wasteful number, since it uses less digits than its factorization.

3970720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 28.

The square root of 3970720 is about 1992.6665551466. Note that the first 3 decimals coincide. The cubic root of 3970720 is about 158.3518304029.

The spelling of 3970720 in words is "three million, nine hundred seventy thousand, seven hundred twenty".