281022 has 16 divisors (see below), whose sum is σ = 642432. Its totient is φ = 80280.

The previous prime is 280997. The next prime is 281023. The reversal of 281022 is 220182.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 280992 and 281010.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 281022.

It is not an unprimeable number, because it can be changed into a prime (281023) by changing a digit.

281022 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3304 + ... + 3387.

It is an arithmetic number, because the mean of its divisors is an integer number (40152).

2²⁸¹⁰²² is an apocalyptic number.

281022 is an abundant number, since it is smaller than the sum of its proper divisors (361410).

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

281022 is a wasteful number, since it uses less digits than its factorization.

281022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6703.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 281022 is about 530.1150818454. The cubic root of 281022 is about 65.5008255048.

The spelling of 281022 in words is "two hundred eighty-one thousand, twenty-two".