257787468 has 24 divisors (see below), whose sum is σ = 668338160. Its totient is φ = 85929120.

The previous prime is 257787457. The next prime is 257787469. The reversal of 257787468 is 864787752.

It is a happy number.

257787468 is a `hidden beast` number, since 2 + 577 + 8 + 7 + 4 + 68 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (257787469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1193353 + ... + 1193568.

Almost surely, 2^257787468 is an apocalyptic number.

It is an amenable number.

257787468 is an abundant number, since it is smaller than the sum of its proper divisors (410550692).

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

257787468 is a wasteful number, since it uses less digits than its factorization.

257787468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2386934 (or 2386926 counting only the distinct ones).

The product of its digits is 5268480, while the sum is 54.

The square root of 257787468 is about 16055.7612089866. The cubic root of 257787468 is about 636.4348219118.

The spelling of 257787468 in words is "two hundred fifty-seven million, seven hundred eighty-seven thousand, four hundred sixty-eight".