84028820 has 24 divisors (see below), whose sum is σ = 176668128. Its totient is φ = 33572000.

The previous prime is 84028801. The next prime is 84028823. The reversal of 84028820 is 2882048.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84028823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19895 + ... + 23745.

It is an arithmetic number, because the mean of its divisors is an integer number (7361172).

Almost surely, 2^84028820 is an apocalyptic number.

It is an amenable number.

84028820 is an abundant number, since it is smaller than the sum of its proper divisors (92639308).

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

84028820 is a wasteful number, since it uses less digits than its factorization.

84028820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4951 (or 4949 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 32.

The square root of 84028820 is about 9166.7235149752. The cubic root of 84028820 is about 438.0019946671.

It can be divided in two parts, 84028 and 820, that added together give a palindrome (84848).

The spelling of 84028820 in words is "eighty-four million, twenty-eight thousand, eight hundred twenty".