83216812 has 12 divisors (see below), whose sum is σ = 166433680. Its totient is φ = 35664336.

The previous prime is 83216807. The next prime is 83216821. The reversal of 83216812 is 21861238.

83216812 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1485987 + ... + 1486042.

Almost surely, 2^83216812 is an apocalyptic number.

It is an amenable number.

83216812 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

83216812 is a wasteful number, since it uses less digits than its factorization.

83216812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2972040 (or 2972038 counting only the distinct ones).

The product of its digits is 4608, while the sum is 31.

The square root of 83216812 is about 9122.3249229569. The cubic root of 83216812 is about 436.5865558870.

The spelling of 83216812 in words is "eighty-three million, two hundred sixteen thousand, eight hundred twelve".