82790578 has 32 divisors (see below), whose sum is σ = 143458560. Its totient is φ = 35493120.

The previous prime is 82790569. The next prime is 82790651. The reversal of 82790578 is 87509728.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33733 + ... + 36103.

It is an arithmetic number, because the mean of its divisors is an integer number (4483080).

Almost surely, 2^82790578 is an apocalyptic number.

82790578 is a deficient number, since it is larger than the sum of its proper divisors (60667982).

82790578 is a wasteful number, since it uses less digits than its factorization.

82790578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2482.

The product of its (nonzero) digits is 282240, while the sum is 46.

The square root of 82790578 is about 9098.9327945644. The cubic root of 82790578 is about 435.8398852356.

The spelling of 82790578 in words is "eighty-two million, seven hundred ninety thousand, five hundred seventy-eight".