84873728 has 40 divisors (see below), whose sum is σ = 173238912. Its totient is φ = 41522176.

The previous prime is 84873727. The next prime is 84873781. The reversal of 84873728 is 82737848.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (84873727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22301 + ... + 25827.

Almost surely, 2^84873728 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 84873728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86619456).

84873728 is an abundant number, since it is smaller than the sum of its proper divisors (88365184).

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

84873728 is an equidigital number, since it uses as much as digits as its factorization.

84873728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3592 (or 3576 counting only the distinct ones).

The product of its digits is 602112, while the sum is 47.

The square root of 84873728 is about 9212.6938514204. The cubic root of 84873728 is about 439.4651352048.

The spelling of 84873728 in words is "eighty-four million, eight hundred seventy-three thousand, seven hundred twenty-eight".