82808811 has 12 divisors (see below), whose sum is σ = 124043192. Its totient is φ = 55205712.

The previous prime is 82808743. The next prime is 82808839. The reversal of 82808811 is 11880828.

It is a happy number.

It is not a de Polignac number, because 82808811 - 2¹⁷ = 82677739 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82808881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170146 + ... + 170631.

Almost surely, 2^82808811 is an apocalyptic number.

82808811 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

82808811 is a deficient number, since it is larger than the sum of its proper divisors (41234381).

82808811 is an equidigital number, since it uses as much as digits as its factorization.

82808811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340792 (or 340780 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 36.

The square root of 82808811 is about 9099.9346700952. The cubic root of 82808811 is about 435.8718779475.

The spelling of 82808811 in words is "eighty-two million, eight hundred eight thousand, eight hundred eleven".