281490 has 32 divisors (see below), whose sum is σ = 737856. Its totient is φ = 68160.

The previous prime is 281431. The next prime is 281509. The reversal of 281490 is 94182.

281490 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 281490.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 281490.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97 + ... + 756.

It is an arithmetic number, because the mean of its divisors is an integer number (23058).

2²⁸¹⁴⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 281490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (368928).

281490 is an abundant number, since it is smaller than the sum of its proper divisors (456366).

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

281490 is a wasteful number, since it uses less digits than its factorization.

281490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 281490 is about 530.5563118087. The cubic root of 281490 is about 65.5371659400.

The spelling of 281490 in words is "two hundred eighty-one thousand, four hundred ninety".