20330085 has 16 divisors (see below), whose sum is σ = 33221376. Its totient is φ = 10611648.

The previous prime is 20330083. The next prime is 20330117. The reversal of 20330085 is 58003302.

It is not a de Polignac number, because 20330085 - 2¹ = 20330083 is a prime.

It is a super-2 number, since 2×20330085² = 826624712214450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20330081) 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 15 ways as a sum of consecutive naturals, for example, 13714 + ... + 15123.

It is an arithmetic number, because the mean of its divisors is an integer number (2076336).

Almost surely, 2^20330085 is an apocalyptic number.

It is an amenable number.

20330085 is a deficient number, since it is larger than the sum of its proper divisors (12891291).

20330085 is a wasteful number, since it uses less digits than its factorization.

20330085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28892.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 20330085 is about 4508.8895528722. The cubic root of 20330085 is about 272.9269350551.

Adding to 20330085 its reverse (58003302), we get a palindrome (78333387).

The spelling of 20330085 in words is "twenty million, three hundred thirty thousand, eighty-five".