205006216 has 16 divisors (see below), whose sum is σ = 385249500. Its totient is φ = 102273024.

The previous prime is 205006187. The next prime is 205006229. The reversal of 205006216 is 612600502.

It can be written as a sum of positive squares in 2 ways, for example, as 196280100 + 8726116 = 14010^2 + 2954^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24945 + ... + 32128.

Almost surely, 2^205006216 is an apocalyptic number.

It is an amenable number.

205006216 is a deficient number, since it is larger than the sum of its proper divisors (180243284).

205006216 is a wasteful number, since it uses less digits than its factorization.

205006216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57528 (or 57524 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 205006216 is about 14318.0381337668. The cubic root of 205006216 is about 589.6428135834.

Adding to 205006216 its reverse (612600502), we get a palindrome (817606718).

The spelling of 205006216 in words is "two hundred five million, six thousand, two hundred sixteen".