281973852 has 48 divisors (see below), whose sum is σ = 733236000. Its totient is φ = 93709440.

The previous prime is 281973829. The next prime is 281973893. The reversal of 281973852 is 258379182.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 281973798 and 281973807.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 33952 + ... + 41432.

It is an arithmetic number, because the mean of its divisors is an integer number (15275750).

Almost surely, 2^281973852 is an apocalyptic number.

It is an amenable number.

281973852 is an abundant number, since it is smaller than the sum of its proper divisors (451262148).

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

281973852 is a wasteful number, since it uses less digits than its factorization.

281973852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7843 (or 7835 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 281973852 is about 16792.0770603282. The cubic root of 281973852 is about 655.7469496675.

The spelling of 281973852 in words is "two hundred eighty-one million, nine hundred seventy-three thousand, eight hundred fifty-two".