206443834 has 16 divisors (see below), whose sum is σ = 318763008. Its totient is φ = 100224432.

The previous prime is 206443823. The next prime is 206443847. The reversal of 206443834 is 438344602.

It is a self number, because there is not a number n which added to its sum of digits gives 206443834.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3292 + ... + 20584.

It is an arithmetic number, because the mean of its divisors is an integer number (19922688).

Almost surely, 2^206443834 is an apocalyptic number.

206443834 is a deficient number, since it is larger than the sum of its proper divisors (112319174).

206443834 is a wasteful number, since it uses less digits than its factorization.

206443834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17469.

The product of its (nonzero) digits is 55296, while the sum is 34.

The square root of 206443834 is about 14368.1534652161. The cubic root of 206443834 is about 591.0179057660.

The spelling of 206443834 in words is "two hundred six million, four hundred forty-three thousand, eight hundred thirty-four".