728928937 has 8 divisors (see below), whose sum is σ = 798154560. Its totient is φ = 660196560.

The previous prime is 728928919. The next prime is 728928943. The reversal of 728928937 is 739829827.

728928937 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-728928937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728928917) 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, 120213 + ... + 126130.

It is an arithmetic number, because the mean of its divisors is an integer number (99769320).

Almost surely, 2^728928937 is an apocalyptic number.

It is an amenable number.

728928937 is a deficient number, since it is larger than the sum of its proper divisors (69225623).

728928937 is a wasteful number, since it uses less digits than its factorization.

728928937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246623.

The product of its digits is 3048192, while the sum is 55.

The square root of 728928937 is about 26998.6839864465. The cubic root of 728928937 is about 899.9707550168.

The spelling of 728928937 in words is "seven hundred twenty-eight million, nine hundred twenty-eight thousand, nine hundred thirty-seven".