82005229 has 4 divisors (see below), whose sum is σ = 86829084. Its totient is φ = 77181376.

The previous prime is 82005227. The next prime is 82005269. The reversal of 82005229 is 92250028.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 75255625 + 6749604 = 8675^2 + 2598^2 .

It is a cyclic number.

It is not a de Polignac number, because 82005229 - 2¹ = 82005227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82005197 and 82005206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82005227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2411902 + ... + 2411935.

It is an arithmetic number, because the mean of its divisors is an integer number (21707271).

Almost surely, 2^82005229 is an apocalyptic number.

It is an amenable number.

82005229 is a deficient number, since it is larger than the sum of its proper divisors (4823855).

82005229 is a wasteful number, since it uses less digits than its factorization.

82005229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4823854.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 82005229 is about 9055.6738567596. The cubic root of 82005229 is about 434.4573830528.

The spelling of 82005229 in words is "eighty-two million, five thousand, two hundred twenty-nine".