8428284 has 36 divisors (see below), whose sum is σ = 21521136. Its totient is φ = 2780928.

The previous prime is 8428237. The next prime is 8428289. The reversal of 8428284 is 4828248.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8428289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2572 + ... + 4844.

Almost surely, 2^8428284 is an apocalyptic number.

It is an amenable number.

8428284 is an abundant number, since it is smaller than the sum of its proper divisors (13092852).

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

8428284 is a wasteful number, since it uses less digits than its factorization.

8428284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2386 (or 2381 counting only the distinct ones).

The product of its digits is 32768, while the sum is 36.

The square root of 8428284 is about 2903.1507022544. The cubic root of 8428284 is about 203.5071725443.

Subtracting from 8428284 its sum of digits (36), we obtain a palindrome (8428248).

The spelling of 8428284 in words is "eight million, four hundred twenty-eight thousand, two hundred eighty-four".