284347222 has 4 divisors (see below), whose sum is σ = 426520836. Its totient is φ = 142173610.

The previous prime is 284347213. The next prime is 284347223. The reversal of 284347222 is 222743482.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284347223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71086804 + ... + 71086807.

It is an arithmetic number, because the mean of its divisors is an integer number (106630209).

Almost surely, 2^284347222 is an apocalyptic number.

284347222 is a deficient number, since it is larger than the sum of its proper divisors (142173614).

284347222 is a wasteful number, since it uses less digits than its factorization.

284347222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142173613.

The product of its digits is 43008, while the sum is 34.

The square root of 284347222 is about 16862.5983169854. The cubic root of 284347222 is about 657.5816161269.

The spelling of 284347222 in words is "two hundred eighty-four million, three hundred forty-seven thousand, two hundred twenty-two".