257828768 has 24 divisors (see below), whose sum is σ = 508485600. Its totient is φ = 128689600.

The previous prime is 257828759. The next prime is 257828777. The reversal of 257828768 is 867828752.

It is an interprime number because it is at equal distance from previous prime (257828759) and next prime (257828777).

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, 12443 + ... + 25893.

It is an arithmetic number, because the mean of its divisors is an integer number (21186900).

Almost surely, 2^257828768 is an apocalyptic number.

It is an amenable number.

257828768 is a deficient number, since it is larger than the sum of its proper divisors (250656832).

257828768 is a wasteful number, since it uses less digits than its factorization.

257828768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14060 (or 14052 counting only the distinct ones).

The product of its digits is 3010560, while the sum is 53.

The square root of 257828768 is about 16057.0473001732. The cubic root of 257828768 is about 636.4688077306.

The spelling of 257828768 in words is "two hundred fifty-seven million, eight hundred twenty-eight thousand, seven hundred sixty-eight".