3980240 has 40 divisors (see below), whose sum is σ = 10097568. Its totient is φ = 1447040.

The previous prime is 3980231. The next prime is 3980281. The reversal of 3980240 is 420893.

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

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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, 1382 + ... + 3141.

Almost surely, 2^3980240 is an apocalyptic number.

It is an amenable number.

3980240 is an abundant number, since it is smaller than the sum of its proper divisors (6117328).

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

3980240 is a wasteful number, since it uses less digits than its factorization.

3980240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4547 (or 4541 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 3980240 is about 1995.0538839841. The cubic root of 3980240 is about 158.4782815462.

The spelling of 3980240 in words is "three million, nine hundred eighty thousand, two hundred forty".