82578680 has 32 divisors (see below), whose sum is σ = 188425440. Its totient is φ = 32565120.

The previous prime is 82578679. The next prime is 82578721. The reversal of 82578680 is 8687528.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11699 + ... + 17378.

It is an arithmetic number, because the mean of its divisors is an integer number (5888295).

Almost surely, 2^82578680 is an apocalyptic number.

It is an amenable number.

82578680 is an abundant number, since it is smaller than the sum of its proper divisors (105846760).

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

82578680 is a wasteful number, since it uses less digits than its factorization.

82578680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29159 (or 29155 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 82578680 is about 9087.2812215756. The cubic root of 82578680 is about 435.4677313593.

The spelling of 82578680 in words is "eighty-two million, five hundred seventy-eight thousand, six hundred eighty".