255696128 has 18 divisors (see below), whose sum is σ = 510393954. Its totient is φ = 127847936.

The previous prime is 255696113. The next prime is 255696137. The reversal of 255696128 is 821696552.

255696128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 254977024 + 719104 = 15968^2 + 848^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499151 + ... + 499662.

Almost surely, 2^255696128 is an apocalyptic number.

It is an amenable number.

255696128 is a deficient number, since it is larger than the sum of its proper divisors (254697826).

255696128 is an frugal number, since it uses more digits than its factorization.

255696128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998829 (or 998815 counting only the distinct ones).

The product of its digits is 259200, while the sum is 44.

The square root of 255696128 is about 15990.5011803883. The cubic root of 255696128 is about 634.7090886441.

The spelling of 255696128 in words is "two hundred fifty-five million, six hundred ninety-six thousand, one hundred twenty-eight".