281983648 has 24 divisors (see below), whose sum is σ = 556506720. Its totient is φ = 140648640.

The previous prime is 281983613. The next prime is 281983649. The reversal of 281983648 is 846389182.

It is not an unprimeable number, because it can be changed into a prime (281983649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2893 + ... + 23923.

It is an arithmetic number, because the mean of its divisors is an integer number (23187780).

Almost surely, 2^281983648 is an apocalyptic number.

It is an amenable number.

281983648 is a deficient number, since it is larger than the sum of its proper divisors (274523072).

281983648 is a wasteful number, since it uses less digits than its factorization.

281983648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21460 (or 21452 counting only the distinct ones).

The product of its digits is 663552, while the sum is 49.

The square root of 281983648 is about 16792.3687429737. The cubic root of 281983648 is about 655.7545433063.

The spelling of 281983648 in words is "two hundred eighty-one million, nine hundred eighty-three thousand, six hundred forty-eight".