281118 has 8 divisors (see below), whose sum is σ = 562248. Its totient is φ = 93704.

The previous prime is 281117. The next prime is 281131. The reversal of 281118 is 811182.

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

281118 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 281094 and 281103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23421 + ... + 23432.

It is an arithmetic number, because the mean of its divisors is an integer number (70281).

2²⁸¹¹¹⁸ is an apocalyptic number.

281118 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

281118 is a wasteful number, since it uses less digits than its factorization.

281118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46858.

The product of its digits is 128, while the sum is 21.

The square root of 281118 is about 530.2056204908. The cubic root of 281118 is about 65.5082832405.

The spelling of 281118 in words is "two hundred eighty-one thousand, one hundred eighteen".