257746134 has 32 divisors (see below), whose sum is σ = 543519360. Its totient is φ = 81259200.

The previous prime is 257746123. The next prime is 257746187. The reversal of 257746134 is 431647752.

It is a junction number, because it is equal to n+sod(n) for n = 257746092 and 257746101.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 85269 + ... + 88239.

It is an arithmetic number, because the mean of its divisors is an integer number (16984980).

Almost surely, 2^257746134 is an apocalyptic number.

257746134 is an abundant number, since it is smaller than the sum of its proper divisors (285773226).

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

257746134 is a wasteful number, since it uses less digits than its factorization.

257746134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3756.

The product of its digits is 141120, while the sum is 39.

The square root of 257746134 is about 16054.4739558791. The cubic root of 257746134 is about 636.4008044797.

The spelling of 257746134 in words is "two hundred fifty-seven million, seven hundred forty-six thousand, one hundred thirty-four".