284487 has 32 divisors (see below), whose sum is σ = 491520. Its totient is φ = 142560.

The previous prime is 284483. The next prime is 284489. The reversal of 284487 is 784482.

It is not a de Polignac number, because 284487 - 2² = 284483 is a prime.

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 284487.

It is not an unprimeable number, because it can be changed into a prime (284483) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9162 + ... + 9192.

It is an arithmetic number, because the mean of its divisors is an integer number (15360).

2²⁸⁴⁴⁸⁷ is an apocalyptic number.

284487 is a deficient number, since it is larger than the sum of its proper divisors (207033).

284487 is a wasteful number, since it uses less digits than its factorization.

284487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83.

The product of its digits is 14336, while the sum is 33.

The square root of 284487 is about 533.3732276746. The cubic root of 284487 is about 65.7689348715.

The spelling of 284487 in words is "two hundred eighty-four thousand, four hundred eighty-seven".