728992404 has 108 divisors (see below), whose sum is σ = 2212898688. Its totient is φ = 201549600.

The previous prime is 728992349. The next prime is 728992457. The reversal of 728992404 is 404299827.

728992404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 728992404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 48019 + ... + 61349.

Almost surely, 2^728992404 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 728992404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1106449344).

728992404 is an abundant number, since it is smaller than the sum of its proper divisors (1483906284).

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

728992404 is a wasteful number, since it uses less digits than its factorization.

728992404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13386 (or 13374 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 728992404 is about 26999.8593329669. The cubic root of 728992404 is about 899.9968740632.

The spelling of 728992404 in words is "seven hundred twenty-eight million, nine hundred ninety-two thousand, four hundred four".