8216500 has 24 divisors (see below), whose sum is σ = 17945928. Its totient is φ = 3286400.

The previous prime is 8216489. The next prime is 8216503. The reversal of 8216500 is 56128.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 128164 + 8088336 = 358^2 + 2844^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8216503) 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, 7717 + ... + 8716.

It is an arithmetic number, because the mean of its divisors is an integer number (747747).

Almost surely, 2^8216500 is an apocalyptic number.

It is an amenable number.

8216500 is an abundant number, since it is smaller than the sum of its proper divisors (9729428).

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

8216500 is a wasteful number, since it uses less digits than its factorization.

8216500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16452 (or 16440 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 8216500 is about 2866.4437897855. The cubic root of 8216500 is about 201.7881319424.

The spelling of 8216500 in words is "eight million, two hundred sixteen thousand, five hundred".