256926 has 8 divisors (see below), whose sum is σ = 513864. Its totient is φ = 85640.

The previous prime is 256903. The next prime is 256931. The reversal of 256926 is 629652.

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

256926 is an admirable number.

It is a d-powerful number, because it can be written as 2⁷ + 5⁷ + 9³ + 6³ + 2¹⁷ + 6⁶ .

It is a junction number, because it is equal to n+sod(n) for n = 256893 and 256902.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 21405 + ... + 21416.

It is an arithmetic number, because the mean of its divisors is an integer number (64233).

2²⁵⁶⁹²⁶ is an apocalyptic number.

256926 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

256926 is a wasteful number, since it uses less digits than its factorization.

256926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42826.

The product of its digits is 6480, while the sum is 30.

The square root of 256926 is about 506.8786837104. The cubic root of 256926 is about 63.5725089842.

The spelling of 256926 in words is "two hundred fifty-six thousand, nine hundred twenty-six".