281984244 has 48 divisors (see below), whose sum is σ = 696521280. Its totient is φ = 88542720.

The previous prime is 281984243. The next prime is 281984251. The reversal of 281984244 is 442489182.

It is a super-2 number, since 2×281984244² = 159030227728503072, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 281984196 and 281984205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281984243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37852 + ... + 44684.

It is an arithmetic number, because the mean of its divisors is an integer number (14510860).

Almost surely, 2^281984244 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 281984244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348260640).

281984244 is an abundant number, since it is smaller than the sum of its proper divisors (414537036).

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

281984244 is a wasteful number, since it uses less digits than its factorization.

281984244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7040 (or 7038 counting only the distinct ones).

The product of its digits is 147456, while the sum is 42.

The square root of 281984244 is about 16792.3864891206. The cubic root of 281984244 is about 655.7550053064.

The spelling of 281984244 in words is "two hundred eighty-one million, nine hundred eighty-four thousand, two hundred forty-four".