284216 has 8 divisors (see below), whose sum is σ = 532920. Its totient is φ = 142104.

The previous prime is 284201. The next prime is 284227. The reversal of 284216 is 612482.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 284191 and 284200.

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 284216.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17756 + ... + 17771.

It is an arithmetic number, because the mean of its divisors is an integer number (66615).

2²⁸⁴²¹⁶ is an apocalyptic number.

It is an amenable number.

284216 is a deficient number, since it is larger than the sum of its proper divisors (248704).

284216 is a wasteful number, since it uses less digits than its factorization.

284216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35533 (or 35529 counting only the distinct ones).

The product of its digits is 768, while the sum is 23.

The square root of 284216 is about 533.1191236487. The cubic root of 284216 is about 65.7480445861.

Adding to 284216 its reverse (612482), we get a palindrome (896698).

The spelling of 284216 in words is "two hundred eighty-four thousand, two hundred sixteen".