206828656 has 20 divisors (see below), whose sum is σ = 401896152. Its totient is φ = 103113536.

The previous prime is 206828653. The next prime is 206828669. The reversal of 206828656 is 656828602.

206828656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206828651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13075 + ... + 24178.

Almost surely, 2^206828656 is an apocalyptic number.

It is an amenable number.

206828656 is a deficient number, since it is larger than the sum of its proper divisors (195067496).

206828656 is a wasteful number, since it uses less digits than its factorization.

206828656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37608 (or 37602 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 206828656 is about 14381.5387215694. The cubic root of 206828656 is about 591.3849071538.

The spelling of 206828656 in words is "two hundred six million, eight hundred twenty-eight thousand, six hundred fifty-six".