255871980 has 384 divisors, whose sum is σ = 1011548160. Its totient is φ = 52254720.

The previous prime is 255871961. The next prime is 255871999. The reversal of 255871980 is 89178552.

It is a happy number.

255871980 is a `hidden beast` number, since 2 + 558 + 7 + 1 + 98 + 0 = 666.

255871980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (255871961) and next prime (255871999).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2014677 + ... + 2014803.

It is an arithmetic number, because the mean of its divisors is an integer number (2634240).

Almost surely, 2^255871980 is an apocalyptic number.

255871980 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 255871980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (505774080).

255871980 is an abundant number, since it is smaller than the sum of its proper divisors (755676180).

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

255871980 is a wasteful number, since it uses less digits than its factorization.

255871980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 45.

The square root of 255871980 is about 15995.9988747186. The cubic root of 255871980 is about 634.8545598668.

The spelling of 255871980 in words is "two hundred fifty-five million, eight hundred seventy-one thousand, nine hundred eighty".