3966280 has 32 divisors (see below), whose sum is σ = 8983800. Its totient is φ = 1575936.

The previous prime is 3966271. The next prime is 3966293. The reversal of 3966280 is 826693.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3290596 + 675684 = 1814^2 + 822^2 .

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8944 + ... + 9376.

Almost surely, 2^3966280 is an apocalyptic number.

It is an amenable number.

3966280 is an abundant number, since it is smaller than the sum of its proper divisors (5017520).

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

3966280 is a wasteful number, since it uses less digits than its factorization.

3966280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673 (or 669 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 3966280 is about 1991.5521584935. The cubic root of 3966280 is about 158.2927861701.

The spelling of 3966280 in words is "three million, nine hundred sixty-six thousand, two hundred eighty".