82020618 has 12 divisors (see below), whose sum is σ = 177711378. Its totient is φ = 27340200.

The previous prime is 82020577. The next prime is 82020629. The reversal of 82020618 is 81602028.

82020618 is a `hidden beast` number, since 8 + 20 + 20 + 618 = 666.

It can be written as a sum of positive squares in only one way, i.e., 77211369 + 4809249 = 8787^2 + 2193^2 .

It is a junction number, because it is equal to n+sod(n) for n = 82020591 and 82020600.

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 5 ways as a sum of consecutive naturals, for example, 2278333 + ... + 2278368.

Almost surely, 2^82020618 is an apocalyptic number.

82020618 is an abundant number, since it is smaller than the sum of its proper divisors (95690760).

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

82020618 is a wasteful number, since it uses less digits than its factorization.

82020618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4556709 (or 4556706 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 82020618 is about 9056.5235051867. The cubic root of 82020618 is about 434.4845579317.

The spelling of 82020618 in words is "eighty-two million, twenty thousand, six hundred eighteen".