256085982 has 32 divisors (see below), whose sum is σ = 569986560. Its totient is φ = 85226040.

The previous prime is 256085981. The next prime is 256086001. The reversal of 256085982 is 289580652.

256085982 is a `hidden beast` number, since 2 + 56 + 0 + 8 + 598 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256085981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33883 + ... + 40745.

It is an arithmetic number, because the mean of its divisors is an integer number (17812080).

Almost surely, 2^256085982 is an apocalyptic number.

256085982 is an abundant number, since it is smaller than the sum of its proper divisors (313900578).

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

256085982 is a wasteful number, since it uses less digits than its factorization.

256085982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7565 (or 7559 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The square root of 256085982 is about 16002.6867119243. The cubic root of 256085982 is about 635.0315002870.

The spelling of 256085982 in words is "two hundred fifty-six million, eighty-five thousand, nine hundred eighty-two".