82809708 has 24 divisors (see below), whose sum is σ = 193715760. Its totient is φ = 27532800.

The previous prime is 82809697. The next prime is 82809721. The reversal of 82809708 is 80790828.

It is a happy number.

82809708 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

82809708 is strictly pandigital in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 82809708.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3793 + ... + 13416.

It is an arithmetic number, because the mean of its divisors is an integer number (8071490).

Almost surely, 2^82809708 is an apocalyptic number.

It is an amenable number.

82809708 is an abundant number, since it is smaller than the sum of its proper divisors (110906052).

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

82809708 is a wasteful number, since it uses less digits than its factorization.

82809708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17617 (or 17615 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 82809708 is about 9099.9839560298. The cubic root of 82809708 is about 435.8734517562.

The spelling of 82809708 in words is "eighty-two million, eight hundred nine thousand, seven hundred eight".