205000002 has 24 divisors (see below), whose sum is σ = 444659436. Its totient is φ = 68257536.

The previous prime is 205000001. The next prime is 205000007. The reversal of 205000002 is 200000502.

It can be written as a sum of positive squares in 2 ways, for example, as 176066361 + 28933641 = 13269^2 + 5379^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (205000001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11758 + ... + 23414.

Almost surely, 2^205000002 is an apocalyptic number.

205000002 is an abundant number, since it is smaller than the sum of its proper divisors (239659434).

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

205000002 is a wasteful number, since it uses less digits than its factorization.

205000002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12642 (or 12639 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 9.

The square root of 205000002 is about 14317.8211331194. The cubic root of 205000002 is about 589.6368559146.

Adding to 205000002 its reverse (200000502), we get a palindrome (405000504).

The spelling of 205000002 in words is "two hundred five million, two", and thus it is an aban number.