728708469764 has 24 divisors (see below), whose sum is σ = 1464390228000. Its totient is φ = 313797905280.

The previous prime is 728708469763. The next prime is 728708469799. The reversal of 728708469764 is 467964807827.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 728708469694 and 728708469703.

It is not an unprimeable number, because it can be changed into a prime (728708469763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 435829589 + ... + 435831260.

It is an arithmetic number, because the mean of its divisors is an integer number (61016259500).

Almost surely, 2^728708469764 is an apocalyptic number.

It is an amenable number.

728708469764 is an abundant number, since it is smaller than the sum of its proper divisors (735681758236).

728708469764 is a wasteful number, since it uses less digits than its factorization.

728708469764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871660883 (or 871660881 counting only the distinct ones).

The product of its (nonzero) digits is 227598336, while the sum is 68.

The spelling of 728708469764 in words is "seven hundred twenty-eight billion, seven hundred eight million, four hundred sixty-nine thousand, seven hundred sixty-four".