204830615 has 12 divisors (see below), whose sum is σ = 270174072. Its totient is φ = 148967280.

The previous prime is 204830611. The next prime is 204830651. The reversal of 204830615 is 516038402.

It is not a de Polignac number, because 204830615 - 2² = 204830611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204830611) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 168677 + ... + 169886.

It is an arithmetic number, because the mean of its divisors is an integer number (22514506).

Almost surely, 2^204830615 is an apocalyptic number.

204830615 is a deficient number, since it is larger than the sum of its proper divisors (65343457).

204830615 is a wasteful number, since it uses less digits than its factorization.

204830615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338590 (or 338579 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 204830615 is about 14311.9046601073. The cubic root of 204830615 is about 589.4744098358.

The spelling of 204830615 in words is "two hundred four million, eight hundred thirty thousand, six hundred fifteen".