256916 has 12 divisors (see below), whose sum is σ = 490560. Its totient is φ = 116760.

The previous prime is 256903. The next prime is 256931. The reversal of 256916 is 619652.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

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 256916.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2876 + ... + 2963.

It is an arithmetic number, because the mean of its divisors is an integer number (40880).

2²⁵⁶⁹¹⁶ is an apocalyptic number.

It is an amenable number.

256916 is a deficient number, since it is larger than the sum of its proper divisors (233644).

256916 is a wasteful number, since it uses less digits than its factorization.

256916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5854 (or 5852 counting only the distinct ones).

The product of its digits is 3240, while the sum is 29.

The square root of 256916 is about 506.8688193211. The cubic root of 256916 is about 63.5716841899.

The spelling of 256916 in words is "two hundred fifty-six thousand, nine hundred sixteen".