281922 has 16 divisors (see below), whose sum is σ = 593760. Its totient is φ = 88992.

The previous prime is 281921. The next prime is 281923. The reversal of 281922 is 229182.

It is an interprime number because it is at equal distance from previous prime (281921) and next prime (281923).

It is a junction number, because it is equal to n+sod(n) for n = 281892 and 281901.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 281922.

It is not an unprimeable number, because it can be changed into a prime (281921) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1123 + ... + 1350.

It is an arithmetic number, because the mean of its divisors is an integer number (37110).

2²⁸¹⁹²² is an apocalyptic number.

281922 is an abundant number, since it is smaller than the sum of its proper divisors (311838).

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

281922 is a wasteful number, since it uses less digits than its factorization.

281922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2497.

The product of its digits is 576, while the sum is 24.

The square root of 281922 is about 530.9632755662. The cubic root of 281922 is about 65.5706752234.

The spelling of 281922 in words is "two hundred eighty-one thousand, nine hundred twenty-two".