206298640928 has 24 divisors (see below), whose sum is σ = 417127490892. Its totient is φ = 100361500416.

The previous prime is 206298640897. The next prime is 206298640949. The reversal of 206298640928 is 829046892602.

It can be written as a sum of positive squares in 2 ways, for example, as 187063170064 + 19235470864 = 432508^2 + 138692^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87118175 + ... + 87120542.

Almost surely, 2^206298640928 is an apocalyptic number.

It is an amenable number.

206298640928 is an abundant number, since it is smaller than the sum of its proper divisors (210828849964).

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

206298640928 is a wasteful number, since it uses less digits than its factorization.

206298640928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174238764 (or 174238756 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 56.

The spelling of 206298640928 in words is "two hundred six billion, two hundred ninety-eight million, six hundred forty thousand, nine hundred twenty-eight".