20585118 has 16 divisors (see below), whose sum is σ = 41216256. Its totient is φ = 6854040.

The previous prime is 20585111. The next prime is 20585119. The reversal of 20585118 is 81158502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20585111) 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, 7333 + ... + 9743.

It is an arithmetic number, because the mean of its divisors is an integer number (2576016).

Almost surely, 2^20585118 is an apocalyptic number.

20585118 is an abundant number, since it is smaller than the sum of its proper divisors (20631138).

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

20585118 is a wasteful number, since it uses less digits than its factorization.

20585118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3839.

The product of its (nonzero) digits is 3200, while the sum is 30.

The square root of 20585118 is about 4537.0825427801. The cubic root of 20585118 is about 274.0634498840.

The spelling of 20585118 in words is "twenty million, five hundred eighty-five thousand, one hundred eighteen".