256476 has 48 divisors (see below), whose sum is σ = 685440. Its totient is φ = 73920.

The previous prime is 256471. The next prime is 256483. The reversal of 256476 is 674652.

256476 = T₂₈ + T₂₉ + ... + T₁₁₅.

It is a d-powerful number, because it can be written as 2¹⁷ + 5⁷ + 4³ + 6³ + 7³ + 6⁶ .

Its product of digits (10080) is a multiple of the sum of its prime divisors (112).

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 256476.

It is not an unprimeable number, because it can be changed into a prime (256471) by changing a digit.

256476 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 15 ways as a sum of consecutive naturals, for example, 3795 + ... + 3861.

It is an arithmetic number, because the mean of its divisors is an integer number (14280).

256476 is a Friedman number, since it can be written as (26+7)*(6^5-4), using all its digits and the basic arithmetic operations.

2²⁵⁶⁴⁷⁶ 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 256476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (342720).

256476 is an abundant number, since it is smaller than the sum of its proper divisors (428964).

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

256476 is a wasteful number, since it uses less digits than its factorization.

256476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 112 counting only the distinct ones).

The product of its digits is 10080, while the sum is 30.

The square root of 256476 is about 506.4345959746. The cubic root of 256476 is about 63.5353720302.

The spelling of 256476 in words is "two hundred fifty-six thousand, four hundred seventy-six".