256934 has 4 divisors (see below), whose sum is σ = 385404. Its totient is φ = 128466.

The previous prime is 256931. The next prime is 256939. The reversal of 256934 is 439652.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 256897 and 256906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64232 + ... + 64235.

It is an arithmetic number, because the mean of its divisors is an integer number (96351).

2²⁵⁶⁹³⁴ is an apocalyptic number.

256934 is a deficient number, since it is larger than the sum of its proper divisors (128470).

256934 is a wasteful number, since it uses less digits than its factorization.

256934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128469.

The product of its digits is 6480, while the sum is 29.

The square root of 256934 is about 506.8865750836. The cubic root of 256934 is about 63.5731688043.

The spelling of 256934 in words is "two hundred fifty-six thousand, nine hundred thirty-four".