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255888 = 24321777
BaseRepresentation
bin111110011110010000
3111000000100
4332132100
531142023
65252400
72114013
oct763620
9430010
10255888
11165286
12104100
138c619
146937a
1550c43
hex3e790

255888 has 30 divisors (see below), whose sum is σ = 716534. Its totient is φ = 85248.

The previous prime is 255887. The next prime is 255907. The reversal of 255888 is 888552.

It can be written as a sum of positive squares in only one way, i.e., 219024 + 36864 = 468^2 + 192^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (255887) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 745 + ... + 1032.

2255888 is an apocalyptic number.

It is an amenable number.

255888 is an abundant number, since it is smaller than the sum of its proper divisors (460646).

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

255888 is a wasteful number, since it uses less digits than its factorization.

255888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1791 (or 1782 counting only the distinct ones).

The product of its digits is 25600, while the sum is 36.

The square root of 255888 is about 505.8537338006. The cubic root of 255888 is about 63.4867808885.

The spelling of 255888 in words is "two hundred fifty-five thousand, eight hundred eighty-eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 36 48 72 144 1777 3554 5331 7108 10662 14216 15993 21324 28432 31986 42648 63972 85296 127944 255888