8305216 has 14 divisors (see below), whose sum is σ = 16480790. Its totient is φ = 4152576.

The previous prime is 8305207. The next prime is 8305217. The reversal of 8305216 is 6125038.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8294400 + 10816 = 2880^2 + 104^2 .

It is a super-2 number, since 2×8305216² = 137953225613312, which contains 22 as substring.

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 (8305217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64821 + ... + 64948.

Almost surely, 2^8305216 is an apocalyptic number.

It is an amenable number.

8305216 is a deficient number, since it is larger than the sum of its proper divisors (8175574).

8305216 is a wasteful number, since it uses less digits than its factorization.

8305216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129781 (or 129771 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 8305216 is about 2881.8771660152. The cubic root of 8305216 is about 202.5117891831.

The spelling of 8305216 in words is "eight million, three hundred five thousand, two hundred sixteen".