281898 has 12 divisors (see below), whose sum is σ = 610818. Its totient is φ = 93960.

The previous prime is 281893. The next prime is 281921. The reversal of 281898 is 898182.

It can be written as a sum of positive squares in only one way, i.e., 154449 + 127449 = 393^2 + 357^2 .

It is not an unprimeable number, because it can be changed into a prime (281893) by changing a digit.

281898 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 5 ways as a sum of consecutive naturals, for example, 7813 + ... + 7848.

2²⁸¹⁸⁹⁸ is an apocalyptic number.

281898 is an abundant number, since it is smaller than the sum of its proper divisors (328920).

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

281898 is a wasteful number, since it uses less digits than its factorization.

281898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15669 (or 15666 counting only the distinct ones).

The product of its digits is 9216, while the sum is 36.

The square root of 281898 is about 530.9406746521. The cubic root of 281898 is about 65.5688144950.

It can be divided in two parts, 2818 and 98, that added together give a square (2916 = 54²).

The spelling of 281898 in words is "two hundred eighty-one thousand, eight hundred ninety-eight".