204420394 has 8 divisors (see below), whose sum is σ = 311657508. Its totient is φ = 100534560.

The previous prime is 204420379. The next prime is 204420407. The reversal of 204420394 is 493024402.

204420394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 133102369 + 71318025 = 11537^2 + 8445^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 837667 + ... + 837910.

Almost surely, 2^204420394 is an apocalyptic number.

204420394 is a deficient number, since it is larger than the sum of its proper divisors (107237114).

204420394 is a wasteful number, since it uses less digits than its factorization.

204420394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1675640.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 204420394 is about 14297.5660166337. The cubic root of 204420394 is about 589.0806269177.

Adding to 204420394 its reverse (493024402), we get a palindrome (697444796).

The spelling of 204420394 in words is "two hundred four million, four hundred twenty thousand, three hundred ninety-four".