3967216 has 20 divisors (see below), whose sum is σ = 8385624. Its totient is φ = 1803200.

The previous prime is 3967207. The next prime is 3967231. The reversal of 3967216 is 6127693.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11095 + ... + 11446.

Almost surely, 2^3967216 is an apocalyptic number.

It is an amenable number.

3967216 is an abundant number, since it is smaller than the sum of its proper divisors (4418408).

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

3967216 is a wasteful number, since it uses less digits than its factorization.

3967216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22560 (or 22554 counting only the distinct ones).

The product of its digits is 13608, while the sum is 34.

The square root of 3967216 is about 1991.7871372212. The cubic root of 3967216 is about 158.3052369967.

The spelling of 3967216 in words is "three million, nine hundred sixty-seven thousand, two hundred sixteen".