20030085 has 60 divisors (see below), whose sum is σ = 38171628. Its totient is φ = 10046592.

The previous prime is 20030081. The next prime is 20030089. The reversal of 20030085 is 58003002.

It is an interprime number because it is at equal distance from previous prime (20030081) and next prime (20030089).

It can be written as a sum of positive squares in 2 ways, for example, as 9474084 + 10556001 = 3078^2 + 3249^2 .

It is not a de Polignac number, because 20030085 - 2² = 20030081 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20030081) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 146137 + ... + 146273.

Almost surely, 2^20030085 is an apocalyptic number.

It is an amenable number.

20030085 is a deficient number, since it is larger than the sum of its proper divisors (18141543).

20030085 is a wasteful number, since it uses less digits than its factorization.

20030085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20030085 is about 4475.4982962794. The cubic root of 20030085 is about 271.5777988943.

Adding to 20030085 its reverse (58003002), we get a palindrome (78033087).

The spelling of 20030085 in words is "twenty million, thirty thousand, eighty-five".