256412 has 12 divisors (see below), whose sum is σ = 483336. Its totient is φ = 118320.

The previous prime is 256393. The next prime is 256423. The reversal of 256412 is 214652.

It is a happy number.

It is a super-2 number, since 2×256412² = 131494227488, which contains 22 as substring.

It is a congruent number.

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, 2414 + ... + 2517.

It is an arithmetic number, because the mean of its divisors is an integer number (40278).

2²⁵⁶⁴¹² is an apocalyptic number.

It is an amenable number.

256412 is a deficient number, since it is larger than the sum of its proper divisors (226924).

256412 is a wasteful number, since it uses less digits than its factorization.

256412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4948 (or 4946 counting only the distinct ones).

The product of its digits is 480, while the sum is 20.

The square root of 256412 is about 506.3714051958. The cubic root of 256412 is about 63.5300868026.

The spelling of 256412 in words is "two hundred fifty-six thousand, four hundred twelve".