728418643064 has 32 divisors (see below), whose sum is σ = 1587352982400. Its totient is φ = 306888240480.

The previous prime is 728418643039. The next prime is 728418643093. The reversal of 728418643064 is 460346814827.

It is a junction number, because it is equal to n+sod(n) for n = 728418642997 and 728418643015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110229542 + ... + 110236149.

It is an arithmetic number, because the mean of its divisors is an integer number (49604780700).

Almost surely, 2^728418643064 is an apocalyptic number.

It is an amenable number.

728418643064 is an abundant number, since it is smaller than the sum of its proper divisors (858934339336).

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

728418643064 is a wasteful number, since it uses less digits than its factorization.

728418643064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220465763 (or 220465759 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 53.

The spelling of 728418643064 in words is "seven hundred twenty-eight billion, four hundred eighteen million, six hundred forty-three thousand, sixty-four".