206120306 has 16 divisors (see below), whose sum is σ = 356654016. Its totient is φ = 87511056.

The previous prime is 206120293. The next prime is 206120309. The reversal of 206120306 is 603021602.

It is not an unprimeable number, because it can be changed into a prime (206120309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67301 + ... + 70296.

It is an arithmetic number, because the mean of its divisors is an integer number (22290876).

Almost surely, 2^206120306 is an apocalyptic number.

206120306 is a deficient number, since it is larger than the sum of its proper divisors (150533710).

206120306 is a wasteful number, since it uses less digits than its factorization.

206120306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137713.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 206120306 is about 14356.8905407822. The cubic root of 206120306 is about 590.7090068763.

Adding to 206120306 its reverse (603021602), we get a palindrome (809141908).

The spelling of 206120306 in words is "two hundred six million, one hundred twenty thousand, three hundred six".