257804268 has 12 divisors (see below), whose sum is σ = 601543320. Its totient is φ = 85934752.

The previous prime is 257804251. The next prime is 257804297. The reversal of 257804268 is 862408752.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10741833 + ... + 10741856.

It is an arithmetic number, because the mean of its divisors is an integer number (50128610).

Almost surely, 2^257804268 is an apocalyptic number.

It is an amenable number.

257804268 is an abundant number, since it is smaller than the sum of its proper divisors (343739052).

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

257804268 is a wasteful number, since it uses less digits than its factorization.

257804268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21483696 (or 21483694 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 257804268 is about 16056.2843771528. The cubic root of 257804268 is about 636.4486470896.

The spelling of 257804268 in words is "two hundred fifty-seven million, eight hundred four thousand, two hundred sixty-eight".