82578056 has 16 divisors (see below), whose sum is σ = 168909840. Its totient is φ = 37535440.

The previous prime is 82578053. The next prime is 82578071. The reversal of 82578056 is 65087528.

It is not an unprimeable number, because it can be changed into a prime (82578053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 469106 + ... + 469281.

It is an arithmetic number, because the mean of its divisors is an integer number (10556865).

Almost surely, 2^82578056 is an apocalyptic number.

It is an amenable number.

82578056 is an abundant number, since it is smaller than the sum of its proper divisors (86331784).

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

82578056 is a wasteful number, since it uses less digits than its factorization.

82578056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938404 (or 938400 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 82578056 is about 9087.2468878093. The cubic root of 82578056 is about 435.4666344961.

The spelling of 82578056 in words is "eighty-two million, five hundred seventy-eight thousand, fifty-six".