82574442 has 12 divisors (see below), whose sum is σ = 178911330. Its totient is φ = 27524808.

The previous prime is 82574407. The next prime is 82574449. The reversal of 82574442 is 24447528.

82574442 is a `hidden beast` number, since 82 + 574 + 4 + 4 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 54154881 + 28419561 = 7359^2 + 5331^2 .

It is a super-2 number, since 2×82574442² = 13637076943222728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 82574397 and 82574406.

It is not an unprimeable number, because it can be changed into a prime (82574449) 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 5 ways as a sum of consecutive naturals, for example, 2293717 + ... + 2293752.

Almost surely, 2^82574442 is an apocalyptic number.

82574442 is an abundant number, since it is smaller than the sum of its proper divisors (96336888).

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

82574442 is a wasteful number, since it uses less digits than its factorization.

82574442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4587477 (or 4587474 counting only the distinct ones).

The product of its digits is 71680, while the sum is 36.

The square root of 82574442 is about 9087.0480355284. The cubic root of 82574442 is about 435.4602817213.

The spelling of 82574442 in words is "eighty-two million, five hundred seventy-four thousand, four hundred forty-two".