256305376 has 24 divisors (see below), whose sum is σ = 526541904. Its totient is φ = 122580480.

The previous prime is 256305373. The next prime is 256305443. The reversal of 256305376 is 673503652.

It is a happy number.

256305376 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256305373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173385 + ... + 174856.

It is an arithmetic number, because the mean of its divisors is an integer number (21939246).

Almost surely, 2^256305376 is an apocalyptic number.

It is an amenable number.

256305376 is an abundant number, since it is smaller than the sum of its proper divisors (270236528).

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

256305376 is a wasteful number, since it uses less digits than its factorization.

256305376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348274 (or 348266 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 37.

The square root of 256305376 is about 16009.5401557946. The cubic root of 256305376 is about 635.2127966002.

The spelling of 256305376 in words is "two hundred fifty-six million, three hundred five thousand, three hundred seventy-six".