204434386 has 32 divisors (see below), whose sum is σ = 335301120. Its totient is φ = 92922816.

The previous prime is 204434339. The next prime is 204434411. The reversal of 204434386 is 683434402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 855255 + ... + 855493.

It is an arithmetic number, because the mean of its divisors is an integer number (10478160).

Almost surely, 2^204434386 is an apocalyptic number.

204434386 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

204434386 is a deficient number, since it is larger than the sum of its proper divisors (130866734).

204434386 is a wasteful number, since it uses less digits than its factorization.

204434386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618.

The product of its (nonzero) digits is 55296, while the sum is 34.

The square root of 204434386 is about 14298.0553223157. The cubic root of 204434386 is about 589.0940669141.

Adding to 204434386 its reverse (683434402), we get a palindrome (887868788).

The spelling of 204434386 in words is "two hundred four million, four hundred thirty-four thousand, three hundred eighty-six".