403256 has 32 divisors (see below), whose sum is σ = 912000. Its totient is φ = 163296.

The previous prime is 403253. The next prime is 403261. The reversal of 403256 is 652304.

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 403256.

It is not an unprimeable number, because it can be changed into a prime (403253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 875 + ... + 1253.

It is an arithmetic number, because the mean of its divisors is an integer number (28500).

2⁴⁰³²⁵⁶ 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 403256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (456000).

403256 is an abundant number, since it is smaller than the sum of its proper divisors (508744).

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

403256 is a wasteful number, since it uses less digits than its factorization.

403256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 403256 is about 635.0244089797. The cubic root of 403256 is about 73.8800100721.

The spelling of 403256 in words is "four hundred three thousand, two hundred fifty-six".