257268788 has 24 divisors (see below), whose sum is σ = 525487872. Its totient is φ = 107911584.

The previous prime is 257268691. The next prime is 257268799. The reversal of 257268788 is 887862752.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 96431 + ... + 99062.

It is an arithmetic number, because the mean of its divisors is an integer number (21895328).

Almost surely, 2^257268788 is an apocalyptic number.

257268788 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

257268788 is an abundant number, since it is smaller than the sum of its proper divisors (268219084).

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

257268788 is a wasteful number, since it uses less digits than its factorization.

257268788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195551 (or 195549 counting only the distinct ones).

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

The square root of 257268788 is about 16039.6006184693. The cubic root of 257268788 is about 636.0076901355.

The spelling of 257268788 in words is "two hundred fifty-seven million, two hundred sixty-eight thousand, seven hundred eighty-eight".