3967220 has 24 divisors (see below), whose sum is σ = 8371944. Its totient is φ = 1579136.

The previous prime is 3967207. The next prime is 3967231. The reversal of 3967220 is 227693.

3967220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2630884 + 1336336 = 1622^2 + 1156^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5522 + ... + 6198.

It is an arithmetic number, because the mean of its divisors is an integer number (348831).

Almost surely, 2^3967220 is an apocalyptic number.

It is an amenable number.

3967220 is an abundant number, since it is smaller than the sum of its proper divisors (4404724).

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

3967220 is a wasteful number, since it uses less digits than its factorization.

3967220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979 (or 977 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 3967220 is about 1991.7881413444. The cubic root of 3967220 is about 158.3052902012.

The spelling of 3967220 in words is "three million, nine hundred sixty-seven thousand, two hundred twenty".