406256 has 10 divisors (see below), whose sum is σ = 787152. Its totient is φ = 203120.

The previous prime is 406253. The next prime is 406267. The reversal of 406256 is 652604.

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 406256.

It is not an unprimeable number, because it can be changed into a prime (406253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12680 + ... + 12711.

2⁴⁰⁶²⁵⁶ is an apocalyptic number.

It is an amenable number.

406256 is a deficient number, since it is larger than the sum of its proper divisors (380896).

406256 is a wasteful number, since it uses less digits than its factorization.

406256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25399 (or 25393 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 406256 is about 637.3821459690. The cubic root of 406256 is about 74.0627663233.

The spelling of 406256 in words is "four hundred six thousand, two hundred fifty-six".