281344 has 36 divisors (see below), whose sum is σ = 645904. Its totient is φ = 119808.

The previous prime is 281339. The next prime is 281353. The reversal of 281344 is 443182.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

281344 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1714 + ... + 1870.

2²⁸¹³⁴⁴ 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 281344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322952).

281344 is an abundant number, since it is smaller than the sum of its proper divisors (364560).

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

281344 is an equidigital number, since it uses as much as digits as its factorization.

281344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 166 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 281344 is about 530.4187025360. The cubic root of 281344 is about 65.5258332923.

It can be divided in two parts, 281 and 344, that added together give a 4-th power (625 = 5⁴).

The spelling of 281344 in words is "two hundred eighty-one thousand, three hundred forty-four".