256542360 has 64 divisors (see below), whose sum is σ = 794465280. Its totient is φ = 66203520.

The previous prime is 256542337. The next prime is 256542379. The reversal of 256542360 is 63245652.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 30762 + ... + 38201.

It is an arithmetic number, because the mean of its divisors is an integer number (12413520).

Almost surely, 2^256542360 is an apocalyptic number.

256542360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256542360 is an abundant number, since it is smaller than the sum of its proper divisors (537922920).

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

256542360 is a wasteful number, since it uses less digits than its factorization.

256542360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69008 (or 69004 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 256542360 is about 16016.9397826177. The cubic root of 256542360 is about 635.4085122212.

The spelling of 256542360 in words is "two hundred fifty-six million, five hundred forty-two thousand, three hundred sixty".