257087368 has 32 divisors (see below), whose sum is σ = 503775360. Its totient is φ = 122875200.

The previous prime is 257087351. The next prime is 257087381. The reversal of 257087368 is 863780752.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8218 + ... + 24118.

It is an arithmetic number, because the mean of its divisors is an integer number (15742980).

Almost surely, 2^257087368 is an apocalyptic number.

It is an amenable number.

257087368 is a deficient number, since it is larger than the sum of its proper divisors (246687992).

257087368 is a wasteful number, since it uses less digits than its factorization.

257087368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15997 (or 15993 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 46.

The square root of 257087368 is about 16033.9442433857. The cubic root of 257087368 is about 635.8581556754.

The spelling of 257087368 in words is "two hundred fifty-seven million, eighty-seven thousand, three hundred sixty-eight".