205235417 has 16 divisors (see below), whose sum is σ = 219732480. Its totient is φ = 191243712.

The previous prime is 205235377. The next prime is 205235423. The reversal of 205235417 is 714532502.

It is a happy number.

It is not a de Polignac number, because 205235417 - 2⁸ = 205235161 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 205235417.

It is not an unprimeable number, because it can be changed into a prime (205235447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 402959 + ... + 403467.

It is an arithmetic number, because the mean of its divisors is an integer number (13733280).

Almost surely, 2^205235417 is an apocalyptic number.

It is an amenable number.

205235417 is a deficient number, since it is larger than the sum of its proper divisors (14497063).

205235417 is a wasteful number, since it uses less digits than its factorization.

205235417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 205235417 is about 14326.0398226446. The cubic root of 205235417 is about 589.8624758468.

Adding to 205235417 its reverse (714532502), we get a palindrome (919767919).

The spelling of 205235417 in words is "two hundred five million, two hundred thirty-five thousand, four hundred seventeen".