255393728 has 28 divisors (see below), whose sum is σ = 513222240. Its totient is φ = 126077952.

The previous prime is 255393709. The next prime is 255393757. The reversal of 255393728 is 827393552.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20201 + ... + 30312.

Almost surely, 2^255393728 is an apocalyptic number.

It is an amenable number.

255393728 is an abundant number, since it is smaller than the sum of its proper divisors (257828512).

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

255393728 is an equidigital number, since it uses as much as digits as its factorization.

255393728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50604 (or 50594 counting only the distinct ones).

The product of its digits is 453600, while the sum is 44.

The square root of 255393728 is about 15981.0427694816. The cubic root of 255393728 is about 634.4587762332.

The spelling of 255393728 in words is "two hundred fifty-five million, three hundred ninety-three thousand, seven hundred twenty-eight".