82605438 has 24 divisors (see below), whose sum is σ = 179196888. Its totient is φ = 27501552.

The previous prime is 82605437. The next prime is 82605463. The reversal of 82605438 is 83450628.

82605438 is a `hidden beast` number, since 8 + 2 + 605 + 43 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82605433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15645 + ... + 20247.

It is an arithmetic number, because the mean of its divisors is an integer number (7466537).

Almost surely, 2^82605438 is an apocalyptic number.

82605438 is an abundant number, since it is smaller than the sum of its proper divisors (96591450).

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

82605438 is a wasteful number, since it uses less digits than its factorization.

82605438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5608 (or 5605 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 82605438 is about 9088.7533798646. The cubic root of 82605438 is about 435.5147612029.

The spelling of 82605438 in words is "eighty-two million, six hundred five thousand, four hundred thirty-eight".