84028784 has 40 divisors (see below), whose sum is σ = 188702208. Its totient is φ = 35501760.

The previous prime is 84028783. The next prime is 84028799. The reversal of 84028784 is 48782048.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84028783) 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, 2669 + ... + 13235.

Almost surely, 2^84028784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84028784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94351104).

84028784 is an abundant number, since it is smaller than the sum of its proper divisors (104673424).

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

84028784 is a wasteful number, since it uses less digits than its factorization.

84028784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10653 (or 10647 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 41.

The square root of 84028784 is about 9166.7215513508. The cubic root of 84028784 is about 438.0019321169.

The spelling of 84028784 in words is "eighty-four million, twenty-eight thousand, seven hundred eighty-four".