256384616 has 48 divisors (see below), whose sum is σ = 514415340. Its totient is φ = 119767040.

The previous prime is 256384607. The next prime is 256384631. The reversal of 256384616 is 616483652.

It can be written as a sum of positive squares in 6 ways, for example, as 256320100 + 64516 = 16010^2 + 254^2 .

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 11 ways as a sum of consecutive naturals, for example, 399656 + ... + 400296.

Almost surely, 2^256384616 is an apocalyptic number.

It is an amenable number.

256384616 is an abundant number, since it is smaller than the sum of its proper divisors (258030724).

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

256384616 is a wasteful number, since it uses less digits than its factorization.

256384616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854 (or 833 counting only the distinct ones).

The product of its digits is 207360, while the sum is 41.

The square root of 256384616 is about 16012.0147389390. The cubic root of 256384616 is about 635.2782511718.

The spelling of 256384616 in words is "two hundred fifty-six million, three hundred eighty-four thousand, six hundred sixteen".