206211228 has 24 divisors (see below), whose sum is σ = 497752080. Its totient is φ = 66366720.

The previous prime is 206211223. The next prime is 206211277. The reversal of 206211228 is 822112602.

It is a junction number, because it is equal to n+sod(n) for n = 206211198 and 206211207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206211221) by changing a digit.

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, 295933 + ... + 296628.

It is an arithmetic number, because the mean of its divisors is an integer number (20739670).

Almost surely, 2^206211228 is an apocalyptic number.

It is an amenable number.

206211228 is an abundant number, since it is smaller than the sum of its proper divisors (291540852).

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

206211228 is a wasteful number, since it uses less digits than its factorization.

206211228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592597 (or 592595 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 206211228 is about 14360.0566851249. The cubic root of 206211228 is about 590.7958502514.

The spelling of 206211228 in words is "two hundred six million, two hundred eleven thousand, two hundred twenty-eight".