256814 has 8 divisors (see below), whose sum is σ = 390720. Its totient is φ = 126576.

The previous prime is 256813. The next prime is 256831. The reversal of 256814 is 418652.

256814 is an esthetic number in base 8, because in such base its adjacent digits differ by 1.

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 256814.

It is not an unprimeable number, because it can be changed into a prime (256813) 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, 734 + ... + 1025.

It is an arithmetic number, because the mean of its divisors is an integer number (48840).

2²⁵⁶⁸¹⁴ is an apocalyptic number.

256814 is a deficient number, since it is larger than the sum of its proper divisors (133906).

256814 is a wasteful number, since it uses less digits than its factorization.

256814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1834.

The product of its digits is 1920, while the sum is 26.

The square root of 256814 is about 506.7681915827. The cubic root of 256814 is about 63.5632700648.

The spelling of 256814 in words is "two hundred fifty-six thousand, eight hundred fourteen".