256543160 has 32 divisors (see below), whose sum is σ = 590649840. Its totient is φ = 100230144.

The previous prime is 256543153. The next prime is 256543211. The reversal of 256543160 is 61345652.

256543160 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72857 + ... + 76296.

Almost surely, 2^256543160 is an apocalyptic number.

256543160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256543160 is an abundant number, since it is smaller than the sum of its proper divisors (334106680).

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

256543160 is a wasteful number, since it uses less digits than its factorization.

256543160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149207 (or 149203 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 256543160 is about 16016.9647561578. The cubic root of 256543160 is about 635.4091727051.

The spelling of 256543160 in words is "two hundred fifty-six million, five hundred forty-three thousand, one hundred sixty".