256827 has 8 divisors (see below), whose sum is σ = 348480. Its totient is φ = 168200.

The previous prime is 256813. The next prime is 256831. The reversal of 256827 is 728652.

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

It is a cyclic number.

It is not a de Polignac number, because 256827 - 2⁷ = 256699 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256794 and 256803.

It is not an unprimeable number, because it can be changed into a prime (256877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 549 + ... + 902.

It is an arithmetic number, because the mean of its divisors is an integer number (43560).

2²⁵⁶⁸²⁷ is an apocalyptic number.

256827 is a deficient number, since it is larger than the sum of its proper divisors (91653).

256827 is a wasteful number, since it uses less digits than its factorization.

256827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513.

The product of its digits is 6720, while the sum is 30.

The square root of 256827 is about 506.7810177976. The cubic root of 256827 is about 63.5643425771.

The spelling of 256827 in words is "two hundred fifty-six thousand, eight hundred twenty-seven".