205345330 has 8 divisors (see below), whose sum is σ = 369621612. Its totient is φ = 82138128.

The previous prime is 205345321. The next prime is 205345367. The reversal of 205345330 is 33543502.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 189971089 + 15374241 = 13783^2 + 3921^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 205345295 and 205345304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10267257 + ... + 10267276.

Almost surely, 2^205345330 is an apocalyptic number.

205345330 is a deficient number, since it is larger than the sum of its proper divisors (164276282).

205345330 is a wasteful number, since it uses less digits than its factorization.

205345330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20534540.

The product of its (nonzero) digits is 5400, while the sum is 25.

The square root of 205345330 is about 14329.8754356065. The cubic root of 205345330 is about 589.9677565449.

Adding to 205345330 its reverse (33543502), we get a palindrome (238888832).

The spelling of 205345330 in words is "two hundred five million, three hundred forty-five thousand, three hundred thirty".