284422890 has 32 divisors (see below), whose sum is σ = 683145216. Its totient is φ = 75787200.

The previous prime is 284422883. The next prime is 284422891. The reversal of 284422890 is 98224482.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (284422891) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 47040 + ... + 52740.

It is an arithmetic number, because the mean of its divisors is an integer number (21348288).

Almost surely, 2^284422890 is an apocalyptic number.

284422890 is an abundant number, since it is smaller than the sum of its proper divisors (398722326).

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

284422890 is a wasteful number, since it uses less digits than its factorization.

284422890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7374.

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 284422890 is about 16864.8418314552. The cubic root of 284422890 is about 657.6399409129.

The spelling of 284422890 in words is "two hundred eighty-four million, four hundred twenty-two thousand, eight hundred ninety".