206443632 has 40 divisors (see below), whose sum is σ = 550520320. Its totient is φ = 66594240.

The previous prime is 206443619. The next prime is 206443649. The reversal of 206443632 is 236344602.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 206443632.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 67882 + ... + 70857.

It is an arithmetic number, because the mean of its divisors is an integer number (13763008).

Almost surely, 2^206443632 is an apocalyptic number.

It is an amenable number.

206443632 is an abundant number, since it is smaller than the sum of its proper divisors (344076688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206443632 is a wasteful number, since it uses less digits than its factorization.

206443632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138781 (or 138775 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

The square root of 206443632 is about 14368.1464357794. The cubic root of 206443632 is about 591.0177130006.

The spelling of 206443632 in words is "two hundred six million, four hundred forty-three thousand, six hundred thirty-two".