256128792 has 16 divisors (see below), whose sum is σ = 640322040. Its totient is φ = 85376256.

The previous prime is 256128781. The next prime is 256128799. The reversal of 256128792 is 297821652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256128799) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5335993 + ... + 5336040.

Almost surely, 2^256128792 is an apocalyptic number.

It is an amenable number.

256128792 is an abundant number, since it is smaller than the sum of its proper divisors (384193248).

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

256128792 is a wasteful number, since it uses less digits than its factorization.

256128792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10672042 (or 10672038 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 256128792 is about 16004.0242439207. The cubic root of 256128792 is about 635.0668844753.

The spelling of 256128792 in words is "two hundred fifty-six million, one hundred twenty-eight thousand, seven hundred ninety-two".