206156238 has 8 divisors (see below), whose sum is σ = 412312488. Its totient is φ = 68718744.

The previous prime is 206156227. The next prime is 206156243. The reversal of 206156238 is 832651602.

206156238 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

206156238 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 206156199 and 206156208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17179681 + ... + 17179692.

It is an arithmetic number, because the mean of its divisors is an integer number (51539061).

Almost surely, 2^206156238 is an apocalyptic number.

206156238 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

206156238 is a wasteful number, since it uses less digits than its factorization.

206156238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34359378.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 206156238 is about 14358.1418714261. The cubic root of 206156238 is about 590.7433300720.

The spelling of 206156238 in words is "two hundred six million, one hundred fifty-six thousand, two hundred thirty-eight".