256843382 has 4 divisors (see below), whose sum is σ = 385265076. Its totient is φ = 128421690.

The previous prime is 256843331. The next prime is 256843397. The reversal of 256843382 is 283348652.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64210844 + ... + 64210847.

It is an arithmetic number, because the mean of its divisors is an integer number (96316269).

Almost surely, 2^256843382 is an apocalyptic number.

256843382 is a deficient number, since it is larger than the sum of its proper divisors (128421694).

256843382 is a wasteful number, since it uses less digits than its factorization.

256843382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128421693.

The product of its digits is 276480, while the sum is 41.

The square root of 256843382 is about 16026.3340162372. The cubic root of 256843382 is about 635.6569405617.

The spelling of 256843382 in words is "two hundred fifty-six million, eight hundred forty-three thousand, three hundred eighty-two".