204302390 has 32 divisors (see below), whose sum is σ = 381538080. Its totient is φ = 78672384.

The previous prime is 204302389. The next prime is 204302471. The reversal of 204302390 is 93203402.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 124757 + ... + 126383.

It is an arithmetic number, because the mean of its divisors is an integer number (11923065).

Almost surely, 2^204302390 is an apocalyptic number.

204302390 is a deficient number, since it is larger than the sum of its proper divisors (177235690).

204302390 is a wasteful number, since it uses less digits than its factorization.

204302390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 204302390 is about 14293.4387045245. The cubic root of 204302390 is about 588.9672539332.

Adding to 204302390 its reverse (93203402), we get a palindrome (297505792).

The spelling of 204302390 in words is "two hundred four million, three hundred two thousand, three hundred ninety".