728873382582 has 80 divisors (see below), whose sum is σ = 1725567980400. Its totient is φ = 229314628800.

The previous prime is 728873382553. The next prime is 728873382599. The reversal of 728873382582 is 285283378827.

It is a happy number.

728873382582 is a `hidden beast` number, since 7 + 288 + 73 + 38 + 258 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 387832 + ... + 1268132.

It is an arithmetic number, because the mean of its divisors is an integer number (21569599755).

Almost surely, 2^728873382582 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 728873382582, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (862783990200).

728873382582 is an abundant number, since it is smaller than the sum of its proper divisors (996694597818).

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

728873382582 is a wasteful number, since it uses less digits than its factorization.

728873382582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880603 (or 880594 counting only the distinct ones).

The product of its digits is 72253440, while the sum is 63.

The spelling of 728873382582 in words is "seven hundred twenty-eight billion, eight hundred seventy-three million, three hundred eighty-two thousand, five hundred eighty-two".