255087140 has 72 divisors (see below), whose sum is σ = 679819392. Its totient is φ = 79504320.

The previous prime is 255087121. The next prime is 255087143. The reversal of 255087140 is 41780552.

It is a junction number, because it is equal to n+sod(n) for n = 255087097 and 255087106.

It is not an unprimeable number, because it can be changed into a prime (255087143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1052 + ... + 22611.

It is an arithmetic number, because the mean of its divisors is an integer number (9441936).

Almost surely, 2^255087140 is an apocalyptic number.

255087140 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 255087140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (339909696).

255087140 is an abundant number, since it is smaller than the sum of its proper divisors (424732252).

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

255087140 is a wasteful number, since it uses less digits than its factorization.

255087140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23697 (or 23688 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 255087140 is about 15971.4476488514. The cubic root of 255087140 is about 634.2047953999.

The spelling of 255087140 in words is "two hundred fifty-five million, eighty-seven thousand, one hundred forty".