256492782 has 48 divisors (see below), whose sum is σ = 683985120. Its totient is φ = 67646016.

The previous prime is 256492781. The next prime is 256492801. The reversal of 256492782 is 287294652.

256492782 is a `hidden beast` number, since 2 + 564 + 9 + 2 + 7 + 82 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256492781) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76657 + ... + 79932.

It is an arithmetic number, because the mean of its divisors is an integer number (14249690).

Almost surely, 2^256492782 is an apocalyptic number.

256492782 is an abundant number, since it is smaller than the sum of its proper divisors (427492338).

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

256492782 is a wasteful number, since it uses less digits than its factorization.

256492782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156617 (or 156614 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 256492782 is about 16015.3920339154. The cubic root of 256492782 is about 635.3675777042.

The spelling of 256492782 in words is "two hundred fifty-six million, four hundred ninety-two thousand, seven hundred eighty-two".