284542213 has 8 divisors (see below), whose sum is σ = 290181528. Its totient is φ = 278913024.

The previous prime is 284542169. The next prime is 284542217. The reversal of 284542213 is 312245482.

It can be written as a sum of positive squares in 4 ways, for example, as 889249 + 283652964 = 943^2 + 16842^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-284542213 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 (284542217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80581 + ... + 84037.

It is an arithmetic number, because the mean of its divisors is an integer number (36272691).

Almost surely, 2^284542213 is an apocalyptic number.

It is an amenable number.

284542213 is a deficient number, since it is larger than the sum of its proper divisors (5639315).

284542213 is a wasteful number, since it uses less digits than its factorization.

284542213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5063.

The product of its digits is 15360, while the sum is 31.

The square root of 284542213 is about 16868.3790863260. The cubic root of 284542213 is about 657.7318938960.

Adding to 284542213 its reverse (312245482), we get a palindrome (596787695).

The spelling of 284542213 in words is "two hundred eighty-four million, five hundred forty-two thousand, two hundred thirteen".