255428860 has 24 divisors (see below), whose sum is σ = 538655040. Its totient is φ = 101742144.

The previous prime is 255428827. The next prime is 255428863. The reversal of 255428860 is 68824552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255428863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21939 + ... + 31498.

It is an arithmetic number, because the mean of its divisors is an integer number (22443960).

Almost surely, 2^255428860 is an apocalyptic number.

255428860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255428860 is an abundant number, since it is smaller than the sum of its proper divisors (283226180).

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

255428860 is a wasteful number, since it uses less digits than its factorization.

255428860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53685 (or 53683 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 40.

The square root of 255428860 is about 15982.1419090183. The cubic root of 255428860 is about 634.4878669812.

The spelling of 255428860 in words is "two hundred fifty-five million, four hundred twenty-eight thousand, eight hundred sixty".