82440208 has 20 divisors (see below), whose sum is σ = 169124220. Its totient is φ = 38795264.

The previous prime is 82440199. The next prime is 82440227. The reversal of 82440208 is 80204428.

It can be written as a sum of positive squares in 2 ways, for example, as 31002624 + 51437584 = 5568^2 + 7172^2 .

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 3 ways as a sum of consecutive naturals, for example, 151273 + ... + 151816.

It is an arithmetic number, because the mean of its divisors is an integer number (8456211).

Almost surely, 2^82440208 is an apocalyptic number.

It is an amenable number.

82440208 is an abundant number, since it is smaller than the sum of its proper divisors (86684012).

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

82440208 is a wasteful number, since it uses less digits than its factorization.

82440208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303114 (or 303108 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 82440208 is about 9079.6590244348. The cubic root of 82440208 is about 435.2241905977.

The spelling of 82440208 in words is "eighty-two million, four hundred forty thousand, two hundred eight".