255628 has 6 divisors (see below), whose sum is σ = 447356. Its totient is φ = 127812.

The previous prime is 255617. The next prime is 255637. The reversal of 255628 is 826552.

It is a junction number, because it is equal to n+sod(n) for n = 255596 and 255605.

It is an unprimeable number.

255628 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31950 + ... + 31957.

2²⁵⁵⁶²⁸ is an apocalyptic number.

It is an amenable number.

255628 is a deficient number, since it is larger than the sum of its proper divisors (191728).

255628 is a wasteful number, since it uses less digits than its factorization.

255628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63911 (or 63909 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The square root of 255628 is about 505.5966772043. The cubic root of 255628 is about 63.4652712739.

The spelling of 255628 in words is "two hundred fifty-five thousand, six hundred twenty-eight".