281944 has 16 divisors (see below), whose sum is σ = 569520. Its totient is φ = 130080.

The previous prime is 281933. The next prime is 281947. The reversal of 281944 is 449182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281947) 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, 1252 + ... + 1459.

It is an arithmetic number, because the mean of its divisors is an integer number (35595).

2²⁸¹⁹⁴⁴ is an apocalyptic number.

It is an amenable number.

281944 is an abundant number, since it is smaller than the sum of its proper divisors (287576).

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

281944 is a wasteful number, since it uses less digits than its factorization.

281944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2730 (or 2726 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 281944 is about 530.9839922258. The cubic root of 281944 is about 65.5723807984.

It can be divided in two parts, 281 and 944, that added together give a triangular number (1225 = T₄₉).

The spelling of 281944 in words is "two hundred eighty-one thousand, nine hundred forty-four".