256315008 has 32 divisors (see below), whose sum is σ = 680837760. Its totient is φ = 85438208.

The previous prime is 256314991. The next prime is 256315009. The reversal of 256315008 is 800513652.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (256315009) 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, 333360 + ... + 334127.

It is an arithmetic number, because the mean of its divisors is an integer number (21276180).

Almost surely, 2^256315008 is an apocalyptic number.

It is an amenable number.

256315008 is an abundant number, since it is smaller than the sum of its proper divisors (424522752).

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

256315008 is an equidigital number, since it uses as much as digits as its factorization.

256315008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667504 (or 667492 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 256315008 is about 16009.8409736012. The cubic root of 256315008 is about 635.2207536359.

It can be divided in two parts, 2563 and 15008, that added together give a palindrome (17571).

The spelling of 256315008 in words is "two hundred fifty-six million, three hundred fifteen thousand, eight".