204740215 has 12 divisors (see below), whose sum is σ = 249228072. Its totient is φ = 161465360.

The previous prime is 204740209. The next prime is 204740233. The reversal of 204740215 is 512047402.

204740215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 204740215 - 2¹³ = 204732023 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204740215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21144 + ... + 29266.

It is an arithmetic number, because the mean of its divisors is an integer number (20769006).

Almost surely, 2^204740215 is an apocalyptic number.

204740215 is a deficient number, since it is larger than the sum of its proper divisors (44487857).

204740215 is an frugal number, since it uses more digits than its factorization.

204740215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8270 (or 8199 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 204740215 is about 14308.7461015981. The cubic root of 204740215 is about 589.3876774756.

Adding to 204740215 its reverse (512047402), we get a palindrome (716787617).

The spelling of 204740215 in words is "two hundred four million, seven hundred forty thousand, two hundred fifteen".