281430 has 48 divisors (see below), whose sum is σ = 758160. Its totient is φ = 72384.

The previous prime is 281429. The next prime is 281431. The reversal of 281430 is 34182.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (281429) and next prime (281431).

It is a Harshad number since it is a multiple of its sum of digits (18).

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 281430.

It is not an unprimeable number, because it can be changed into a prime (281431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4741 + ... + 4799.

It is an arithmetic number, because the mean of its divisors is an integer number (15795).

2²⁸¹⁴³⁰ is an apocalyptic number.

It is a pronic number, being equal to 530×531.

It is a practical number, because each smaller number is the sum of distinct divisors of 281430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (379080).

281430 is an abundant number, since it is smaller than the sum of its proper divisors (476730).

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

281430 is a wasteful number, since it uses less digits than its factorization.

281430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 281430 is about 530.4997643732. The cubic root of 281430 is about 65.5325091619.

The spelling of 281430 in words is "two hundred eighty-one thousand, four hundred thirty".