205432130 has 16 divisors (see below), whose sum is σ = 370137600. Its totient is φ = 82092912.

The previous prime is 205432127. The next prime is 205432141. The reversal of 205432130 is 31234502.

It is a happy number.

It is a Curzon number.

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, 1421 + ... + 20319.

It is an arithmetic number, because the mean of its divisors is an integer number (23133600).

Almost surely, 2^205432130 is an apocalyptic number.

205432130 is a deficient number, since it is larger than the sum of its proper divisors (164705470).

205432130 is a wasteful number, since it uses less digits than its factorization.

205432130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19993.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 205432130 is about 14332.9037532525. The cubic root of 205432130 is about 590.0508717985.

Adding to 205432130 its reverse (31234502), we get a palindrome (236666632).

The spelling of 205432130 in words is "two hundred five million, four hundred thirty-two thousand, one hundred thirty".