20585084 has 24 divisors (see below), whose sum is σ = 38984400. Its totient is φ = 9454464.

The previous prime is 20585083. The next prime is 20585087. The reversal of 20585084 is 48058502.

It is a self number, because there is not a number n which added to its sum of digits gives 20585084.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20585083) by changing a digit.

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, 11267 + ... + 12965.

It is an arithmetic number, because the mean of its divisors is an integer number (1624350).

Almost surely, 2^20585084 is an apocalyptic number.

It is an amenable number.

20585084 is a deficient number, since it is larger than the sum of its proper divisors (18399316).

20585084 is a wasteful number, since it uses less digits than its factorization.

20585084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1949 (or 1947 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 32.

The square root of 20585084 is about 4537.0787958774. The cubic root of 20585084 is about 274.0632989956.

The spelling of 20585084 in words is "twenty million, five hundred eighty-five thousand, eighty-four".