2947216 has 20 divisors (see below), whose sum is σ = 5749632. Its totient is φ = 1463456.

The previous prime is 2947213. The next prime is 2947249. The reversal of 2947216 is 6127492.

Together with 2802416 it forms an amicable pair .

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (2947211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2121 + ... + 3223.

2^2947216 is an apocalyptic number.

It is an amenable number.

2947216 is a deficient number, since it is larger than the sum of its proper divisors (2802416).

2947216 is a wasteful number, since it uses less digits than its factorization.

2947216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278 (or 1272 counting only the distinct ones).

The product of its digits is 6048, while the sum is 31.

The square root of 2947216 is about 1716.7457586958. The cubic root of 2947216 is about 143.3740837201.

The spelling of 2947216 in words is "two million, nine hundred forty-seven thousand, two hundred sixteen".