255833728 has 16 divisors (see below), whose sum is σ = 509669010. Its totient is φ = 127916800.

The previous prime is 255833723. The next prime is 255833749. The reversal of 255833728 is 827338552.

It can be written as a sum of positive squares in only one way, i.e., 189117504 + 66716224 = 13752^2 + 8168^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (255833723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 999223 + ... + 999478.

Almost surely, 2^255833728 is an apocalyptic number.

It is an amenable number.

255833728 is a deficient number, since it is larger than the sum of its proper divisors (253835282).

255833728 is an equidigital number, since it uses as much as digits as its factorization.

255833728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998715 (or 1998703 counting only the distinct ones).

The product of its digits is 403200, while the sum is 43.

The square root of 255833728 is about 15994.8031560254. The cubic root of 255833728 is about 634.8229220834.

The spelling of 255833728 in words is "two hundred fifty-five million, eight hundred thirty-three thousand, seven hundred twenty-eight".