3215216 has 20 divisors (see below), whose sum is σ = 6501072. Its totient is φ = 1537536.

The previous prime is 3215213. The next prime is 3215231. The reversal of 3215216 is 6125123.

3215216 is nontrivially palindromic in base 3.

It is a super-2 number, since 2×3215216² = 20675227853312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3215213) 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, 4001 + ... + 4736.

Almost surely, 2^3215216 is an apocalyptic number.

It is an amenable number.

3215216 is an abundant number, since it is smaller than the sum of its proper divisors (3285856).

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

3215216 is a wasteful number, since it uses less digits than its factorization.

3215216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8768 (or 8762 counting only the distinct ones).

The product of its digits is 360, while the sum is 20.

The square root of 3215216 is about 1793.1023395222. The cubic root of 3215216 is about 147.5944583129.

The spelling of 3215216 in words is "three million, two hundred fifteen thousand, two hundred sixteen".