728604442038 has 64 divisors (see below), whose sum is σ = 1642829174784. Its totient is φ = 213423936000.

The previous prime is 728604442021. The next prime is 728604442051. The reversal of 728604442038 is 830244406827.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1600420 + ... + 2004632.

It is an arithmetic number, because the mean of its divisors is an integer number (25669205856).

Almost surely, 2^728604442038 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 728604442038, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (821414587392).

728604442038 is an abundant number, since it is smaller than the sum of its proper divisors (914224732746).

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

728604442038 is a wasteful number, since it uses less digits than its factorization.

728604442038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405141.

The product of its (nonzero) digits is 2064384, while the sum is 48.

The spelling of 728604442038 in words is "seven hundred twenty-eight billion, six hundred four million, four hundred forty-two thousand, thirty-eight".