205204450 has 72 divisors (see below), whose sum is σ = 442654704. Its totient is φ = 70176000.

The previous prime is 205204421. The next prime is 205204457. The reversal of 205204450 is 54402502.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (205204457) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 158305 + ... + 159595.

It is an arithmetic number, because the mean of its divisors is an integer number (6147982).

Almost surely, 2^205204450 is an apocalyptic number.

205204450 is an abundant number, since it is smaller than the sum of its proper divisors (237450254).

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

205204450 is a wasteful number, since it uses less digits than its factorization.

205204450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348 (or 1326 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 205204450 is about 14324.9589877249. The cubic root of 205204450 is about 589.8328071695.

Adding to 205204450 its reverse (54402502), we get a palindrome (259606952).

The spelling of 205204450 in words is "two hundred five million, two hundred four thousand, four hundred fifty".