728741731824 has 60 divisors (see below), whose sum is σ = 2115000449016. Its totient is φ = 242913909312.

The previous prime is 728741731819. The next prime is 728741731877. The reversal of 728741731824 is 428137147827.

It is a happy number.

728741731824 is a `hidden beast` number, since 7 + 287 + 41 + 7 + 318 + 2 + 4 = 666.

728741731824 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93712899 + ... + 93720674.

Almost surely, 2^728741731824 is an apocalyptic number.

It is an amenable number.

728741731824 is an abundant number, since it is smaller than the sum of its proper divisors (1386258717192).

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

728741731824 is a wasteful number, since it uses less digits than its factorization.

728741731824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187433596 (or 187433578 counting only the distinct ones).

The product of its digits is 4214784, while the sum is 54.

The spelling of 728741731824 in words is "seven hundred twenty-eight billion, seven hundred forty-one million, seven hundred thirty-one thousand, eight hundred twenty-four".