84028 has 12 divisors (see below), whose sum is σ = 168112. Its totient is φ = 36000.

The previous prime is 84017. The next prime is 84047. The reversal of 84028 is 82048.

84028 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1473 + ... + 1528.

2⁸⁴⁰²⁸ is an apocalyptic number.

It is an amenable number.

84028 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84056).

84028 is a wasteful number, since it uses less digits than its factorization.

84028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3012 (or 3010 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 84028 is about 289.8758354882. The cubic root of 84028 is about 43.8000569907.

It can be divided in two parts, 840 and 28, that added together give a palindrome (868).

The spelling of 84028 in words is "eighty-four thousand, twenty-eight".