728144430680 has 16 divisors (see below), whose sum is σ = 1638324969120. Its totient is φ = 291257772256.

The previous prime is 728144430623. The next prime is 728144430719. The reversal of 728144430680 is 86034441827.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9101805344 + ... + 9101805423.

It is an arithmetic number, because the mean of its divisors is an integer number (102395310570).

Almost surely, 2^728144430680 is an apocalyptic number.

It is an amenable number.

728144430680 is an abundant number, since it is smaller than the sum of its proper divisors (910180538440).

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

728144430680 is a wasteful number, since it uses less digits than its factorization.

728144430680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18203610778 (or 18203610774 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 47.

The spelling of 728144430680 in words is "seven hundred twenty-eight billion, one hundred forty-four million, four hundred thirty thousand, six hundred eighty".