3980720 has 40 divisors (see below), whose sum is σ = 9802944. Its totient is φ = 1498112.

The previous prime is 3980693. The next prime is 3980729. The reversal of 3980720 is 270893.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×3980720² = 31692263436800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3980729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104 + ... + 2823.

Almost surely, 2^3980720 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 3980720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4901472).

3980720 is an abundant number, since it is smaller than the sum of its proper divisors (5822224).

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

3980720 is a wasteful number, since it uses less digits than its factorization.

3980720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2957 (or 2951 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 3980720 is about 1995.1741778602. The cubic root of 3980720 is about 158.4846518922.

The spelling of 3980720 in words is "three million, nine hundred eighty thousand, seven hundred twenty".