281256 has 16 divisors (see below), whose sum is σ = 703200. Its totient is φ = 93744.

The previous prime is 281251. The next prime is 281273. The reversal of 281256 is 652182.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 11719 = 281256 / (2 + 8 + 1 + 2 + 5 + 6).

It is a zygodrome in base 5.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 281256.

It is not an unprimeable number, because it can be changed into a prime (281251) by changing a digit.

281256 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5836 + ... + 5883.

It is an arithmetic number, because the mean of its divisors is an integer number (43950).

2²⁸¹²⁵⁶ is an apocalyptic number.

It is an amenable number.

281256 is an abundant number, since it is smaller than the sum of its proper divisors (421944).

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

281256 is a wasteful number, since it uses less digits than its factorization.

281256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11728 (or 11724 counting only the distinct ones).

The product of its digits is 960, while the sum is 24.

The square root of 281256 is about 530.3357427140. The cubic root of 281256 is about 65.5190007615.

The spelling of 281256 in words is "two hundred eighty-one thousand, two hundred fifty-six".