205049106 has 12 divisors (see below), whose sum is σ = 444273102. Its totient is φ = 68349696.

The previous prime is 205049099. The next prime is 205049107. The reversal of 205049106 is 601940502.

It can be written as a sum of positive squares in only one way, i.e., 124211025 + 80838081 = 11145^2 + 8991^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 205049106.

It is not an unprimeable number, because it can be changed into a prime (205049107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5695791 + ... + 5695826.

Almost surely, 2^205049106 is an apocalyptic number.

205049106 is an abundant number, since it is smaller than the sum of its proper divisors (239223996).

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

205049106 is a wasteful number, since it uses less digits than its factorization.

205049106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11391625 (or 11391622 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 205049106 is about 14319.5358164991. The cubic root of 205049106 is about 589.6839310632.

Adding to 205049106 its reverse (601940502), we get a palindrome (806989608).

The spelling of 205049106 in words is "two hundred five million, forty-nine thousand, one hundred six".