256087682 has 4 divisors (see below), whose sum is σ = 384131526. Its totient is φ = 128043840.

The previous prime is 256087673. The next prime is 256087691. The reversal of 256087682 is 286780652.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (256087673) and next prime (256087691).

It can be written as a sum of positive squares in only one way, i.e., 245204281 + 10883401 = 15659^2 + 3299^2 .

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 as a sum of consecutive naturals, namely, 64021919 + ... + 64021922.

Almost surely, 2^256087682 is an apocalyptic number.

256087682 is a deficient number, since it is larger than the sum of its proper divisors (128043844).

256087682 is a wasteful number, since it uses less digits than its factorization.

256087682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128043843.

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 256087682 is about 16002.7398279170. The cubic root of 256087682 is about 635.0329054806.

The spelling of 256087682 in words is "two hundred fifty-six million, eighty-seven thousand, six hundred eighty-two".