205440274 has 48 divisors (see below), whose sum is σ = 371347200. Its totient is φ = 84485376.

The previous prime is 205440271. The next prime is 205440281. The reversal of 205440274 is 472044502.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (205440271) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 142047 + ... + 143485.

It is an arithmetic number, because the mean of its divisors is an integer number (7736400).

Almost surely, 2^205440274 is an apocalyptic number.

205440274 is a deficient number, since it is larger than the sum of its proper divisors (165906926).

205440274 is a wasteful number, since it uses less digits than its factorization.

205440274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1507 (or 1490 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 28.

The square root of 205440274 is about 14333.1878519749. The cubic root of 205440274 is about 590.0586688762.

Adding to 205440274 its reverse (472044502), we get a palindrome (677484776).

The spelling of 205440274 in words is "two hundred five million, four hundred forty thousand, two hundred seventy-four".