256708704 has 192 divisors, whose sum is σ = 851751936. Its totient is φ = 65961984.

The previous prime is 256708703. The next prime is 256708717. The reversal of 256708704 is 407807652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256708703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 262264 + ... + 263240.

It is an arithmetic number, because the mean of its divisors is an integer number (4436208).

Almost surely, 2^256708704 is an apocalyptic number.

256708704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256708704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (425875968).

256708704 is an abundant number, since it is smaller than the sum of its proper divisors (595043232).

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

256708704 is a wasteful number, since it uses less digits than its factorization.

256708704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037 (or 1029 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 256708704 is about 16022.1316933796. The cubic root of 256708704 is about 635.5458171053.

The spelling of 256708704 in words is "two hundred fifty-six million, seven hundred eight thousand, seven hundred four".