728573072937 has 4 divisors (see below), whose sum is σ = 971430763920. Its totient is φ = 485715381956.

The previous prime is 728573072917. The next prime is 728573072939. The reversal of 728573072937 is 739270375827.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 728573072937 - 2⁸ = 728573072681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (728573072939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121428845487 + ... + 121428845492.

It is an arithmetic number, because the mean of its divisors is an integer number (242857690980).

Almost surely, 2^728573072937 is an apocalyptic number.

It is an amenable number.

728573072937 is a deficient number, since it is larger than the sum of its proper divisors (242857690983).

728573072937 is a wasteful number, since it uses less digits than its factorization.

728573072937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242857690982.

The product of its (nonzero) digits is 31116960, while the sum is 60.

The spelling of 728573072937 in words is "seven hundred twenty-eight billion, five hundred seventy-three million, seventy-two thousand, nine hundred thirty-seven".