284213 has 4 divisors (see below), whose sum is σ = 288288. Its totient is φ = 280140.

The previous prime is 284201. The next prime is 284227. The reversal of 284213 is 312482.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 312482 = 2 ⋅156241.

It is a cyclic number.

It is not a de Polignac number, because 284213 - 2⁶ = 284149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284233) 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, 1931 + ... + 2072.

It is an arithmetic number, because the mean of its divisors is an integer number (72072).

2²⁸⁴²¹³ is an apocalyptic number.

It is an amenable number.

284213 is a deficient number, since it is larger than the sum of its proper divisors (4075).

284213 is an equidigital number, since it uses as much as digits as its factorization.

284213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4074.

The product of its digits is 384, while the sum is 20.

The square root of 284213 is about 533.1163100112. The cubic root of 284213 is about 65.7478132541.

Adding to 284213 its reverse (312482), we get a palindrome (596695).

The spelling of 284213 in words is "two hundred eighty-four thousand, two hundred thirteen".