284481 has 12 divisors (see below), whose sum is σ = 417508. Its totient is φ = 186624.

The previous prime is 284477. The next prime is 284483. The reversal of 284481 is 184482.

284481 is nontrivially palindromic in base 8.

It can be written as a sum of positive squares in 2 ways, for example, as 90000 + 194481 = 300^2 + 441^2 .

It is not a de Polignac number, because 284481 - 2² = 284477 is a prime.

It is a super-2 number, since 2×284481² = 161858878722, which contains 22 as substring.

It is a Duffinian number.

Its product of digits (2048) is a multiple of the sum of its prime factors (512).

It is a Curzon number.

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 284481.

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 11 ways as a sum of consecutive naturals, for example, 441 + ... + 873.

2²⁸⁴⁴⁸¹ is an apocalyptic number.

It is an amenable number.

284481 is a deficient number, since it is larger than the sum of its proper divisors (133027).

284481 is a wasteful number, since it uses less digits than its factorization.

284481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512 (or 509 counting only the distinct ones).

The product of its digits is 2048, while the sum is 27.

The square root of 284481 is about 533.3676030657. The cubic root of 284481 is about 65.7684724996.

Subtracting from 284481 its reverse (184482), we obtain a palindrome (99999).

The spelling of 284481 in words is "two hundred eighty-four thousand, four hundred eighty-one".