256448196 has 81 divisors (see below), whose sum is σ = 693033159. Its totient is φ = 79941888.

The previous prime is 256448177. The next prime is 256448201. The reversal of 256448196 is 691844652.

The square root of 256448196 is 16014.

It is a perfect power (a square), and thus also a powerful number.

256448196 is a `hidden beast` number, since 2 + 564 + 4 + 81 + 9 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1726596 + 254721600 = 1314^2 + 15960^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1633350 + ... + 1633506.

Almost surely, 2^256448196 is an apocalyptic number.

256448196 is the 16014-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256448196

256448196 is an abundant number, since it is smaller than the sum of its proper divisors (436584963).

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

256448196 is a wasteful number, since it uses less digits than its factorization.

256448196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358 (or 179 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The cubic root of 256448196 is about 635.3307603713.

The spelling of 256448196 in words is "two hundred fifty-six million, four hundred forty-eight thousand, one hundred ninety-six".