20030205 has 32 divisors (see below), whose sum is σ = 35118720. Its totient is φ = 9688320.

The previous prime is 20030203. The next prime is 20030207. The reversal of 20030205 is 50203002.

It is an interprime number because it is at equal distance from previous prime (20030203) and next prime (20030207).

It is not a de Polignac number, because 20030205 - 2¹ = 20030203 is a prime.

It is a super-2 number, since 2×20030205² = 802418224684050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20030203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10635 + ... + 12375.

It is an arithmetic number, because the mean of its divisors is an integer number (1097460).

Almost surely, 2^20030205 is an apocalyptic number.

It is an amenable number.

20030205 is a deficient number, since it is larger than the sum of its proper divisors (15088515).

20030205 is a wasteful number, since it uses less digits than its factorization.

20030205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821.

The product of its (nonzero) digits is 60, while the sum is 12.

The square root of 20030205 is about 4475.5117025878. The cubic root of 20030205 is about 271.5783412330.

Adding to 20030205 its reverse (50203002), we get a palindrome (70233207).

The spelling of 20030205 in words is "twenty million, thirty thousand, two hundred five".