281043252 has 144 divisors (see below), whose sum is σ = 866436480. Its totient is φ = 75241728.

The previous prime is 281043251. The next prime is 281043293. The reversal of 281043252 is 252340182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281043251) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1237963 + ... + 1238189.

It is an arithmetic number, because the mean of its divisors is an integer number (6016920).

Almost surely, 2^281043252 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 281043252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (433218240).

281043252 is an abundant number, since it is smaller than the sum of its proper divisors (585393228).

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

281043252 is a wasteful number, since it uses less digits than its factorization.

281043252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 281043252 is about 16764.3446636008. The cubic root of 281043252 is about 655.0247660740.

The spelling of 281043252 in words is "two hundred eighty-one million, forty-three thousand, two hundred fifty-two".