3240205 has 4 divisors (see below), whose sum is σ = 3888252. Its totient is φ = 2592160.

The previous prime is 3240197. The next prime is 3240247. The reversal of 3240205 is 5020423.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5020423 = 17 ⋅295319.

It can be written as a sum of positive squares in 2 ways, for example, as 2579236 + 660969 = 1606^2 + 813^2 .

It is not a de Polignac number, because 3240205 - 2³ = 3240197 is a prime.

It is a Duffinian number.

3240205 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324016 + ... + 324025.

It is an arithmetic number, because the mean of its divisors is an integer number (972063).

Almost surely, 2^3240205 is an apocalyptic number.

It is an amenable number.

3240205 is a deficient number, since it is larger than the sum of its proper divisors (648047).

3240205 is an equidigital number, since it uses as much as digits as its factorization.

3240205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648046.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 3240205 is about 1800.0569435437. The cubic root of 3240205 is about 147.9758452179.

Adding to 3240205 its reverse (5020423), we get a palindrome (8260628).

The spelling of 3240205 in words is "three million, two hundred forty thousand, two hundred five".