281300 has 36 divisors (see below), whose sum is σ = 637980. Its totient is φ = 107520.

The previous prime is 281297. The next prime is 281317. The reversal of 281300 is 3182.

It can be written as a sum of positive squares in 6 ways, for example, as 6724 + 274576 = 82^2 + 524^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2852 + ... + 2948.

2²⁸¹³⁰⁰ is an apocalyptic number.

281300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 281300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318990).

281300 is an abundant number, since it is smaller than the sum of its proper divisors (356680).

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

281300 is a wasteful number, since it uses less digits than its factorization.

281300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 281300 is about 530.3772242470. The cubic root of 281300 is about 65.5224172050.

Adding to 281300 its reverse (3182), we get a palindrome (284482).

The spelling of 281300 in words is "two hundred eighty-one thousand, three hundred".