205322730 has 16 divisors (see below), whose sum is σ = 492774624. Its totient is φ = 54752720.

The previous prime is 205322717. The next prime is 205322779. The reversal of 205322730 is 37223502.

It is a self number, because there is not a number n which added to its sum of digits gives 205322730.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3422016 + ... + 3422075.

It is an arithmetic number, because the mean of its divisors is an integer number (30798414).

Almost surely, 2^205322730 is an apocalyptic number.

205322730 is an abundant number, since it is smaller than the sum of its proper divisors (287451894).

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

205322730 is a wasteful number, since it uses less digits than its factorization.

205322730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6844101.

The product of its (nonzero) digits is 2520, while the sum is 24.

The square root of 205322730 is about 14329.0868515757. The cubic root of 205322730 is about 589.9461120945.

The spelling of 205322730 in words is "two hundred five million, three hundred twenty-two thousand, seven hundred thirty".