281888 has 24 divisors (see below), whose sum is σ = 580608. Its totient is φ = 134464.

The previous prime is 281887. The next prime is 281893. The reversal of 281888 is 888182.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (281887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 545 + ... + 927.

It is an arithmetic number, because the mean of its divisors is an integer number (24192).

2²⁸¹⁸⁸⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 281888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290304).

281888 is an abundant number, since it is smaller than the sum of its proper divisors (298720).

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

281888 is a wasteful number, since it uses less digits than its factorization.

281888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416 (or 408 counting only the distinct ones).

The product of its digits is 8192, while the sum is 35.

The square root of 281888 is about 530.9312573206. The cubic root of 281888 is about 65.5680391603.

The spelling of 281888 in words is "two hundred eighty-one thousand, eight hundred eighty-eight".