205632730 has 16 divisors (see below), whose sum is σ = 370405224. Its totient is φ = 82193920.

The previous prime is 205632727. The next prime is 205632743. The reversal of 205632730 is 37236502.

It can be written as a sum of positive squares in 4 ways, for example, as 183250369 + 22382361 = 13537^2 + 4731^2 .

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 7 ways as a sum of consecutive naturals, for example, 8910 + ... + 22150.

Almost surely, 2^205632730 is an apocalyptic number.

205632730 is a deficient number, since it is larger than the sum of its proper divisors (164772494).

205632730 is a wasteful number, since it uses less digits than its factorization.

205632730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14801.

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 205632730 is about 14339.8999299158. The cubic root of 205632730 is about 590.2428665936.

The spelling of 205632730 in words is "two hundred five million, six hundred thirty-two thousand, seven hundred thirty".