206126216 has 8 divisors (see below), whose sum is σ = 386486670. Its totient is φ = 103063104.

The previous prime is 206126203. The next prime is 206126279. The reversal of 206126216 is 612621602.

It can be written as a sum of positive squares in only one way, i.e., 103103716 + 103022500 = 10154^2 + 10150^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12882881 + ... + 12882896.

Almost surely, 2^206126216 is an apocalyptic number.

It is an amenable number.

206126216 is a deficient number, since it is larger than the sum of its proper divisors (180360454).

206126216 is a wasteful number, since it uses less digits than its factorization.

206126216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25765783 (or 25765779 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 206126216 is about 14357.0963638195. The cubic root of 206126216 is about 590.7146525385.

Adding to 206126216 its reverse (612621602), we get a palindrome (818747818).

The spelling of 206126216 in words is "two hundred six million, one hundred twenty-six thousand, two hundred sixteen".