255003840 has 504 divisors, whose sum is σ = 1106698320. Its totient is φ = 53415936.

The previous prime is 255003797. The next prime is 255003857. The reversal of 255003840 is 48300552.

It is a tau number, because it is divible by the number of its divisors (504).

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1834491 + ... + 1834629.

It is an arithmetic number, because the mean of its divisors is an integer number (2195830).

Almost surely, 2^255003840 is an apocalyptic number.

255003840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255003840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (553349160).

255003840 is an abundant number, since it is smaller than the sum of its proper divisors (851694480).

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

255003840 is a wasteful number, since it uses less digits than its factorization.

255003840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 255003840 is about 15968.8396572826. The cubic root of 255003840 is about 634.1357536193.

The spelling of 255003840 in words is "two hundred fifty-five million, three thousand, eight hundred forty".