256782460 has 24 divisors (see below), whose sum is σ = 588265776. Its totient is φ = 93375360.

The previous prime is 256782457. The next prime is 256782497. The reversal of 256782460 is 64287652.

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, 583377 + ... + 583816.

It is an arithmetic number, because the mean of its divisors is an integer number (24511074).

Almost surely, 2^256782460 is an apocalyptic number.

256782460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256782460 is an abundant number, since it is smaller than the sum of its proper divisors (331483316).

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

256782460 is a wasteful number, since it uses less digits than its factorization.

256782460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167213 (or 1167211 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 256782460 is about 16024.4332193061. The cubic root of 256782460 is about 635.6066783434.

The spelling of 256782460 in words is "two hundred fifty-six million, seven hundred eighty-two thousand, four hundred sixty".