206443330 has 8 divisors (see below), whose sum is σ = 371598012. Its totient is φ = 82577328.

The previous prime is 206443297. The next prime is 206443357. The reversal of 206443330 is 33344602.

It can be written as a sum of positive squares in 2 ways, for example, as 201554809 + 4888521 = 14197^2 + 2211^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 206443295 and 206443304.

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 in 3 ways as a sum of consecutive naturals, for example, 10322157 + ... + 10322176.

Almost surely, 2^206443330 is an apocalyptic number.

206443330 is a deficient number, since it is larger than the sum of its proper divisors (165154682).

206443330 is a wasteful number, since it uses less digits than its factorization.

206443330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20644340.

The product of its (nonzero) digits is 5184, while the sum is 25.

The square root of 206443330 is about 14368.1359264172. The cubic root of 206443330 is about 591.0174248066.

Adding to 206443330 its reverse (33344602), we get a palindrome (239787932).

The spelling of 206443330 in words is "two hundred six million, four hundred forty-three thousand, three hundred thirty".