284404 has 12 divisors (see below), whose sum is σ = 503524. Its totient is φ = 140544.

The previous prime is 284387. The next prime is 284407. The reversal of 284404 is 404482.

It can be written as a sum of positive squares in 2 ways, for example, as 220900 + 63504 = 470^2 + 252^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22 + ... + 754.

2²⁸⁴⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

284404 is a deficient number, since it is larger than the sum of its proper divisors (219120).

284404 is a wasteful number, since it uses less digits than its factorization.

284404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834 (or 832 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 284404 is about 533.2954153188. The cubic root of 284404 is about 65.7625381497.

Adding to 284404 its reverse (404482), we get a palindrome (688886).

The spelling of 284404 in words is "two hundred eighty-four thousand, four hundred four".