82578712 has 16 divisors (see below), whose sum is σ = 162984600. Its totient is φ = 39116160.

The previous prime is 82578679. The next prime is 82578721. The reversal of 82578712 is 21787528.

It is a congruent number.

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, 271489 + ... + 271792.

Almost surely, 2^82578712 is an apocalyptic number.

It is an amenable number.

82578712 is a deficient number, since it is larger than the sum of its proper divisors (80405888).

82578712 is a wasteful number, since it uses less digits than its factorization.

82578712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543306 (or 543302 counting only the distinct ones).

The product of its digits is 62720, while the sum is 40.

The square root of 82578712 is about 9087.2829822780. The cubic root of 82578712 is about 435.4677876086.

The spelling of 82578712 in words is "eighty-two million, five hundred seventy-eight thousand, seven hundred twelve".