728660744 has 32 divisors (see below), whose sum is σ = 1567252800. Its totient is φ = 311115840.

The previous prime is 728660741. The next prime is 728660761. The reversal of 728660744 is 447066827.

It is a junction number, because it is equal to n+sod(n) for n = 728660695 and 728660704.

It is not an unprimeable number, because it can be changed into a prime (728660741) 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, 9122 + ... + 39249.

It is an arithmetic number, because the mean of its divisors is an integer number (48976650).

Almost surely, 2^728660744 is an apocalyptic number.

It is an amenable number.

728660744 is an abundant number, since it is smaller than the sum of its proper divisors (838592056).

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

728660744 is a wasteful number, since it uses less digits than its factorization.

728660744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48653 (or 48649 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 44.

The square root of 728660744 is about 26993.7167503847. The cubic root of 728660744 is about 899.8603668147.

The spelling of 728660744 in words is "seven hundred twenty-eight million, six hundred sixty thousand, seven hundred forty-four".