408256 has 14 divisors (see below), whose sum is σ = 810260. Its totient is φ = 204096.

The previous prime is 408251. The next prime is 408263. The reversal of 408256 is 652804.

It is a self number, because there is not a number n which added to its sum of digits gives 408256.

It is not an unprimeable number, because it can be changed into a prime (408251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3126 + ... + 3253.

2⁴⁰⁸²⁵⁶ is an apocalyptic number.

It is an amenable number.

408256 is a deficient number, since it is larger than the sum of its proper divisors (402004).

408256 is an equidigital number, since it uses as much as digits as its factorization.

408256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6391 (or 6381 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 408256 is about 638.9491372559. The cubic root of 408256 is about 74.1841045280.

The spelling of 408256 in words is "four hundred eight thousand, two hundred fifty-six".