204191017 has 8 divisors (see below), whose sum is σ = 211354880. Its totient is φ = 197063280.

The previous prime is 204191003. The next prime is 204191021. The reversal of 204191017 is 710191402.

204191017 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 204191017 - 2¹¹ = 204188969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204190982 and 204191000.

It is not an unprimeable number, because it can be changed into a prime (204191027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2734 + ... + 20392.

It is an arithmetic number, because the mean of its divisors is an integer number (26419360).

Almost surely, 2^204191017 is an apocalyptic number.

It is an amenable number.

204191017 is a deficient number, since it is larger than the sum of its proper divisors (7163863).

204191017 is a wasteful number, since it uses less digits than its factorization.

204191017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18063.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 204191017 is about 14289.5422249980. The cubic root of 204191017 is about 588.8602116660.

The spelling of 204191017 in words is "two hundred four million, one hundred ninety-one thousand, seventeen".