204430135 has 32 divisors (see below), whose sum is σ = 312359040. Its totient is φ = 124927488.

The previous prime is 204430129. The next prime is 204430147. The reversal of 204430135 is 531034402.

204430135 = T₂₀₇₄ + T₂₀₇₅ + ... + T₂₁₆₄.

It is not a de Polignac number, because 204430135 - 2⁹ = 204429623 is a prime.

It is a super-2 number, since 2×204430135² = 83583360192236450, which contains 22 as substring.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 5449 + ... + 20941.

It is an arithmetic number, because the mean of its divisors is an integer number (9761220).

Almost surely, 2^204430135 is an apocalyptic number.

204430135 is a deficient number, since it is larger than the sum of its proper divisors (107928905).

204430135 is a wasteful number, since it uses less digits than its factorization.

204430135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15547.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 204430135 is about 14297.9066649632. The cubic root of 204430135 is about 589.0899836867.

Adding to 204430135 its reverse (531034402), we get a palindrome (735464537).

The spelling of 204430135 in words is "two hundred four million, four hundred thirty thousand, one hundred thirty-five".