424256 has 28 divisors (see below), whose sum is σ = 963168. Its totient is φ = 181632.

The previous prime is 424247. The next prime is 424261. The reversal of 424256 is 652424.

It is a tau number, because it is divible by the number of its divisors (28).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

424256 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26 + ... + 921.

2⁴²⁴²⁵⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 424256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (481584).

424256 is an abundant number, since it is smaller than the sum of its proper divisors (538912).

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

424256 is an equidigital number, since it uses as much as digits as its factorization.

424256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966 (or 956 counting only the distinct ones).

The product of its digits is 1920, while the sum is 23.

The square root of 424256 is about 651.3493686187. The cubic root of 424256 is about 75.1408316833.

The spelling of 424256 in words is "four hundred twenty-four thousand, two hundred fifty-six".