84028028994 has 224 divisors, whose sum is σ = 233173100160. Its totient is φ = 22105426176.

The previous prime is 84028028971. The next prime is 84028028999. The reversal of 84028028994 is 49982082048.

84028028994 is a `hidden beast` number, since 84 + 0 + 280 + 289 + 9 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 84028028994.

It is not an unprimeable number, because it can be changed into a prime (84028028999) 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 111 ways as a sum of consecutive naturals, for example, 98048614 + ... + 98049470.

It is an arithmetic number, because the mean of its divisors is an integer number (1040951340).

Almost surely, 2^84028028994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84028028994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116586550080).

84028028994 is an abundant number, since it is smaller than the sum of its proper divisors (149145071166).

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

84028028994 is a wasteful number, since it uses less digits than its factorization.

84028028994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636 (or 1621 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 54.

The spelling of 84028028994 in words is "eighty-four billion, twenty-eight million, twenty-eight thousand, nine hundred ninety-four".