257384922 has 16 divisors (see below), whose sum is σ = 522453792. Its totient is φ = 84514320.

The previous prime is 257384917. The next prime is 257384957. The reversal of 257384922 is 229483752.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319729 + ... + 320532.

It is an arithmetic number, because the mean of its divisors is an integer number (32653362).

Almost surely, 2^257384922 is an apocalyptic number.

257384922 is an abundant number, since it is smaller than the sum of its proper divisors (265068870).

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

257384922 is a wasteful number, since it uses less digits than its factorization.

257384922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640333.

The product of its digits is 241920, while the sum is 42.

The square root of 257384922 is about 16043.2204373062. The cubic root of 257384922 is about 636.1033760605.

The spelling of 257384922 in words is "two hundred fifty-seven million, three hundred eighty-four thousand, nine hundred twenty-two".