284421834 has 64 divisors (see below), whose sum is σ = 647577600. Its totient is φ = 92507184.

The previous prime is 284421803. The next prime is 284421857. The reversal of 284421834 is 438124482.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 459177 + ... + 459795.

It is an arithmetic number, because the mean of its divisors is an integer number (10118400).

Almost surely, 2^284421834 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 284421834, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323788800).

284421834 is an abundant number, since it is smaller than the sum of its proper divisors (363155766).

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

284421834 is a wasteful number, since it uses less digits than its factorization.

284421834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824 (or 818 counting only the distinct ones).

The product of its digits is 49152, while the sum is 36.

The square root of 284421834 is about 16864.8105236910. The cubic root of 284421834 is about 657.6391270208.

It can be divided in two parts, 28442 and 1834, that added together give a square (30276 = 174²).

The spelling of 284421834 in words is "two hundred eighty-four million, four hundred twenty-one thousand, eight hundred thirty-four".