82080520 has 32 divisors (see below), whose sum is σ = 185071320. Its totient is φ = 32762880.

The previous prime is 82080497. The next prime is 82080547. The reversal of 82080520 is 2508028.

It can be written as a sum of positive squares in 4 ways, for example, as 48972004 + 33108516 = 6998^2 + 5754^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19744 + ... + 23536.

Almost surely, 2^82080520 is an apocalyptic number.

It is an amenable number.

82080520 is an abundant number, since it is smaller than the sum of its proper divisors (102990800).

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

82080520 is a wasteful number, since it uses less digits than its factorization.

82080520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4345 (or 4341 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 82080520 is about 9059.8300204805. The cubic root of 82080520 is about 434.5903043534.

Adding to 82080520 its reverse (2508028), we get a palindrome (84588548).

The spelling of 82080520 in words is "eighty-two million, eighty thousand, five hundred twenty".