82309806 has 12 divisors (see below), whose sum is σ = 178337952. Its totient is φ = 27436596.

The previous prime is 82309771. The next prime is 82309811. The reversal of 82309806 is 60890328.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2286366 + ... + 2286401.

It is an arithmetic number, because the mean of its divisors is an integer number (14861496).

Almost surely, 2^82309806 is an apocalyptic number.

82309806 is an abundant number, since it is smaller than the sum of its proper divisors (96028146).

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

82309806 is a wasteful number, since it uses less digits than its factorization.

82309806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4572775 (or 4572772 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 82309806 is about 9072.4751859677. The cubic root of 82309806 is about 434.9945936704.

The spelling of 82309806 in words is "eighty-two million, three hundred nine thousand, eight hundred six".