82439828 has 12 divisors (see below), whose sum is σ = 145547220. Its totient is φ = 40854912.

The previous prime is 82439813. The next prime is 82439831. The reversal of 82439828 is 82893428.

It can be written as a sum of positive squares in 2 ways, for example, as 38588944 + 43850884 = 6212^2 + 6622^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90743 + ... + 91646.

It is an arithmetic number, because the mean of its divisors is an integer number (12128935).

Almost surely, 2^82439828 is an apocalyptic number.

It is an amenable number.

82439828 is a deficient number, since it is larger than the sum of its proper divisors (63107392).

82439828 is a wasteful number, since it uses less digits than its factorization.

82439828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182506 (or 182504 counting only the distinct ones).

The product of its digits is 221184, while the sum is 44.

The square root of 82439828 is about 9079.6380985147. The cubic root of 82439828 is about 435.2235218891.

The spelling of 82439828 in words is "eighty-two million, four hundred thirty-nine thousand, eight hundred twenty-eight".