8173216 has 12 divisors (see below), whose sum is σ = 16091082. Its totient is φ = 4086592.

The previous prime is 8173201. The next prime is 8173219. The reversal of 8173216 is 6123718.

It can be written as a sum of positive squares in only one way, i.e., 6780816 + 1392400 = 2604^2 + 1180^2 .

It is not an unprimeable number, because it can be changed into a prime (8173219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127675 + ... + 127738.

Almost surely, 2^8173216 is an apocalyptic number.

It is an amenable number.

8173216 is a deficient number, since it is larger than the sum of its proper divisors (7917866).

8173216 is a wasteful number, since it uses less digits than its factorization.

8173216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255423 (or 255415 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 8173216 is about 2858.8836982291. The cubic root of 8173216 is about 201.4331722226.

The spelling of 8173216 in words is "eight million, one hundred seventy-three thousand, two hundred sixteen".