256482816 has 80 divisors (see below), whose sum is σ = 701908944. Its totient is φ = 83165184.

The previous prime is 256482803. The next prime is 256482817. The reversal of 256482816 is 618284652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256482817) 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, 54576 + ... + 59088.

Almost surely, 2^256482816 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 256482816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350954472).

256482816 is an abundant number, since it is smaller than the sum of its proper divisors (445426128).

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

256482816 is an equidigital number, since it uses as much as digits as its factorization.

256482816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4571 (or 4555 counting only the distinct ones).

The product of its digits is 184320, while the sum is 42.

The square root of 256482816 is about 16015.0808927086. The cubic root of 256482816 is about 635.3593485509.

The spelling of 256482816 in words is "two hundred fifty-six million, four hundred eighty-two thousand, eight hundred sixteen".