281089 has 8 divisors (see below), whose sum is σ = 295488. Its totient is φ = 267120.

The previous prime is 281081. The next prime is 281117. The reversal of 281089 is 980182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 281089 - 2³ = 281081 is a prime.

It is a super-2 number, since 2×281089² = 158022051842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (281081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2574 + ... + 2680.

It is an arithmetic number, because the mean of its divisors is an integer number (36936).

2²⁸¹⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

281089 is a deficient number, since it is larger than the sum of its proper divisors (14399).

281089 is a wasteful number, since it uses less digits than its factorization.

281089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 281089 is about 530.1782719048. The cubic root of 281089 is about 65.5060305618.

The spelling of 281089 in words is "two hundred eighty-one thousand, eighty-nine".