205813098 has 24 divisors (see below), whose sum is σ = 454344228. Its totient is φ = 67309632.

The previous prime is 205813081. The next prime is 205813099. The reversal of 205813098 is 890318502.

It can be written as a sum of positive squares in 2 ways, for example, as 164942649 + 40870449 = 12843^2 + 6393^2 .

It is not an unprimeable number, because it can be changed into a prime (205813099) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 106915 + ... + 108822.

Almost surely, 2^205813098 is an apocalyptic number.

205813098 is an abundant number, since it is smaller than the sum of its proper divisors (248531130).

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

205813098 is a wasteful number, since it uses less digits than its factorization.

205813098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215798 (or 215795 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 205813098 is about 14346.1875771928. The cubic root of 205813098 is about 590.4153907075.

The spelling of 205813098 in words is "two hundred five million, eight hundred thirteen thousand, ninety-eight".