284447222 has 4 divisors (see below), whose sum is σ = 426670836. Its totient is φ = 142223610.

The previous prime is 284447197. The next prime is 284447263. The reversal of 284447222 is 222744482.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222744482 = 2 ⋅111372241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71111804 + ... + 71111807.

It is an arithmetic number, because the mean of its divisors is an integer number (106667709).

Almost surely, 2^284447222 is an apocalyptic number.

284447222 is a deficient number, since it is larger than the sum of its proper divisors (142223614).

284447222 is a wasteful number, since it uses less digits than its factorization.

284447222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142223613.

The product of its digits is 57344, while the sum is 35.

The square root of 284447222 is about 16865.5631984230. The cubic root of 284447222 is about 657.6586937857.

The spelling of 284447222 in words is "two hundred eighty-four million, four hundred forty-seven thousand, two hundred twenty-two".