8216456 has 32 divisors (see below), whose sum is σ = 15903000. Its totient is φ = 3978240.

The previous prime is 8216447. The next prime is 8216459. The reversal of 8216456 is 6546128.

It can be written as a sum of positive squares in 4 ways, for example, as 872356 + 7344100 = 934^2 + 2710^2 .

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8216459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55070 + ... + 55218.

Almost surely, 2^8216456 is an apocalyptic number.

It is an amenable number.

8216456 is a deficient number, since it is larger than the sum of its proper divisors (7686544).

8216456 is a wasteful number, since it uses less digits than its factorization.

8216456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 325 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 8216456 is about 2866.4361147599. The cubic root of 8216456 is about 201.7877717447.

The spelling of 8216456 in words is "eight million, two hundred sixteen thousand, four hundred fifty-six".