205136410 has 8 divisors (see below), whose sum is σ = 369245556. Its totient is φ = 82054560.

The previous prime is 205136387. The next prime is 205136411. The reversal of 205136410 is 14631502.

It can be written as a sum of positive squares in 2 ways, for example, as 205091041 + 45369 = 14321^2 + 213^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (205136411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10256811 + ... + 10256830.

Almost surely, 2^205136410 is an apocalyptic number.

205136410 is a deficient number, since it is larger than the sum of its proper divisors (164109146).

205136410 is a wasteful number, since it uses less digits than its factorization.

205136410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20513648.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 205136410 is about 14322.5839149226. The cubic root of 205136410 is about 589.7676093296.

Adding to 205136410 its reverse (14631502), we get a palindrome (219767912).

The spelling of 205136410 in words is "two hundred five million, one hundred thirty-six thousand, four hundred ten".