255533928 has 64 divisors (see below), whose sum is σ = 690110400. Its totient is φ = 78382080.

The previous prime is 255533921. The next prime is 255533947. The reversal of 255533928 is 829335552.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 255533928.

It is not an unprimeable number, because it can be changed into a prime (255533921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117168 + ... + 119328.

It is an arithmetic number, because the mean of its divisors is an integer number (10782975).

Almost surely, 2^255533928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255533928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345055200).

255533928 is an abundant number, since it is smaller than the sum of its proper divisors (434576472).

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

255533928 is a wasteful number, since it uses less digits than its factorization.

255533928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2562 (or 2558 counting only the distinct ones).

The product of its digits is 324000, while the sum is 42.

The square root of 255533928 is about 15985.4286148354. The cubic root of 255533928 is about 634.5748517131.

The spelling of 255533928 in words is "two hundred fifty-five million, five hundred thirty-three thousand, nine hundred twenty-eight".