257704368 has 40 divisors (see below), whose sum is σ = 669140208. Its totient is φ = 85462272.

The previous prime is 257704357. The next prime is 257704373. The reversal of 257704368 is 863407752.

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 7 ways as a sum of consecutive naturals, for example, 4171 + ... + 23082.

Almost surely, 2^257704368 is an apocalyptic number.

It is an amenable number.

257704368 is an abundant number, since it is smaller than the sum of its proper divisors (411435840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

257704368 is a wasteful number, since it uses less digits than its factorization.

257704368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27461 (or 27455 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 42.

The square root of 257704368 is about 16053.1731442728. The cubic root of 257704368 is about 636.3664278220.

The spelling of 257704368 in words is "two hundred fifty-seven million, seven hundred four thousand, three hundred sixty-eight".