257834 has 8 divisors (see below), whose sum is σ = 389988. Its totient is φ = 127840.

The previous prime is 257797. The next prime is 257837. The reversal of 257834 is 438752.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 255025 + 2809 = 505^2 + 53^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 257797 and 257806.

It is not an unprimeable number, because it can be changed into a prime (257837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197 + ... + 744.

2²⁵⁷⁸³⁴ is an apocalyptic number.

257834 is a deficient number, since it is larger than the sum of its proper divisors (132154).

257834 is a wasteful number, since it uses less digits than its factorization.

257834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080.

The product of its digits is 6720, while the sum is 29.

The square root of 257834 is about 507.7735715848. The cubic root of 257834 is about 63.6473112891.

The spelling of 257834 in words is "two hundred fifty-seven thousand, eight hundred thirty-four".