82187836 has 6 divisors (see below), whose sum is σ = 143828720. Its totient is φ = 41093916.

The previous prime is 82187803. The next prime is 82187837. The reversal of 82187836 is 63878128.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 82187792 and 82187801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82187837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10273476 + ... + 10273483.

Almost surely, 2^82187836 is an apocalyptic number.

It is an amenable number.

82187836 is a deficient number, since it is larger than the sum of its proper divisors (61640884).

82187836 is a wasteful number, since it uses less digits than its factorization.

82187836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20546963 (or 20546961 counting only the distinct ones).

The product of its digits is 129024, while the sum is 43.

The square root of 82187836 is about 9065.7507135372. The cubic root of 82187836 is about 434.7796232566.

The spelling of 82187836 in words is "eighty-two million, one hundred eighty-seven thousand, eight hundred thirty-six".