20303085 has 16 divisors (see below), whose sum is σ = 35438400. Its totient is φ = 9843840.

The previous prime is 20303071. The next prime is 20303111. The reversal of 20303085 is 58030302.

It is not a de Polignac number, because 20303085 - 2⁴ = 20303069 is a prime.

It is a congruent number.

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, 61360 + ... + 61689.

It is an arithmetic number, because the mean of its divisors is an integer number (2214900).

Almost surely, 2^20303085 is an apocalyptic number.

It is an amenable number.

20303085 is a deficient number, since it is larger than the sum of its proper divisors (15135315).

20303085 is a wasteful number, since it uses less digits than its factorization.

20303085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123068.

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

The square root of 20303085 is about 4505.8944727989. The cubic root of 20303085 is about 272.8060585007.

Adding to 20303085 its reverse (58030302), we get a palindrome (78333387).

It can be divided in two parts, 2030 and 3085, that added together give a palindrome (5115).

The spelling of 20303085 in words is "twenty million, three hundred three thousand, eighty-five".