206443938 has 16 divisors (see below), whose sum is σ = 422958816. Its totient is φ = 67136160.

The previous prime is 206443921. The next prime is 206443943. The reversal of 206443938 is 839344602.

It is a junction number, because it is equal to n+sod(n) for n = 206443896 and 206443905.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419356 + ... + 419847.

It is an arithmetic number, because the mean of its divisors is an integer number (26434926).

Almost surely, 2^206443938 is an apocalyptic number.

206443938 is an abundant number, since it is smaller than the sum of its proper divisors (216514878).

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

206443938 is a wasteful number, since it uses less digits than its factorization.

206443938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839249.

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 206443938 is about 14368.1570843306. The cubic root of 206443938 is about 591.0180050115.

The spelling of 206443938 in words is "two hundred six million, four hundred forty-three thousand, nine hundred thirty-eight".