204040355 has 8 divisors (see below), whose sum is σ = 244940352. Its totient is φ = 163171008.

The previous prime is 204040271. The next prime is 204040363. The reversal of 204040355 is 553040402.

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

It is a cyclic number.

It is not a de Polignac number, because 204040355 - 2¹⁶ = 203974819 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 204040355.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11222 + ... + 23108.

It is an arithmetic number, because the mean of its divisors is an integer number (30617544).

Almost surely, 2^204040355 is an apocalyptic number.

204040355 is a deficient number, since it is larger than the sum of its proper divisors (40899997).

204040355 is a wasteful number, since it uses less digits than its factorization.

204040355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15325.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 204040355 is about 14284.2694947974. The cubic root of 204040355 is about 588.7153461902.

Adding to 204040355 its reverse (553040402), we get a palindrome (757080757).

The spelling of 204040355 in words is "two hundred four million, forty thousand, three hundred fifty-five".