284223138 has 16 divisors (see below), whose sum is σ = 568727040. Its totient is φ = 94694256.

The previous prime is 284223127. The next prime is 284223139. The reversal of 284223138 is 831322482.

284223138 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 284223099 and 284223108.

It is not an unprimeable number, because it can be changed into a prime (284223139) 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, 2856 + ... + 24012.

It is an arithmetic number, because the mean of its divisors is an integer number (35545440).

Almost surely, 2^284223138 is an apocalyptic number.

284223138 is an abundant number, since it is smaller than the sum of its proper divisors (284503902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

284223138 is a wasteful number, since it uses less digits than its factorization.

284223138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23401.

The product of its digits is 18432, while the sum is 33.

The square root of 284223138 is about 16858.9186485967. The cubic root of 284223138 is about 657.4859499569.

The spelling of 284223138 in words is "two hundred eighty-four million, two hundred twenty-three thousand, one hundred thirty-eight".