281487 has 8 divisors (see below), whose sum is σ = 379440. Its totient is φ = 185600.

The previous prime is 281431. The next prime is 281509. The reversal of 281487 is 784182.

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

It is a cyclic number.

It is not a de Polignac number, because 281487 - 2⁶ = 281423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162 + ... + 767.

It is an arithmetic number, because the mean of its divisors is an integer number (47430).

2²⁸¹⁴⁸⁷ is an apocalyptic number.

281487 is a deficient number, since it is larger than the sum of its proper divisors (97953).

281487 is a wasteful number, since it uses less digits than its factorization.

281487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033.

The product of its digits is 3584, while the sum is 30.

The square root of 281487 is about 530.5534845800. The cubic root of 281487 is about 65.5369331168.

The spelling of 281487 in words is "two hundred eighty-one thousand, four hundred eighty-seven".