8180816 has 20 divisors (see below), whose sum is σ = 18114912. Its totient is φ = 3506016.

The previous prime is 8180789. The next prime is 8180857. The reversal of 8180816 is 6180818.

It is a happy number.

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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36410 + ... + 36633.

Almost surely, 2^8180816 is an apocalyptic number.

It is an amenable number.

8180816 is an abundant number, since it is smaller than the sum of its proper divisors (9934096).

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

8180816 is a wasteful number, since it uses less digits than its factorization.

8180816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73058 (or 73052 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 32.

The square root of 8180816 is about 2860.2125795122. The cubic root of 8180816 is about 201.4955882021.

The spelling of 8180816 in words is "eight million, one hundred eighty thousand, eight hundred sixteen".