728747372 has 12 divisors (see below), whose sum is σ = 1276852080. Its totient is φ = 363932496.

The previous prime is 728747317. The next prime is 728747399. The reversal of 728747372 is 273747827.

It is a happy number.

It is an unprimeable number.

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, 106568 + ... + 113199.

It is an arithmetic number, because the mean of its divisors is an integer number (106404340).

Almost surely, 2^728747372 is an apocalyptic number.

It is an amenable number.

728747372 is a deficient number, since it is larger than the sum of its proper divisors (548104708).

728747372 is a wasteful number, since it uses less digits than its factorization.

728747372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220600 (or 220598 counting only the distinct ones).

The product of its digits is 921984, while the sum is 47.

The square root of 728747372 is about 26995.3212983287. The cubic root of 728747372 is about 899.8960258487.

The spelling of 728747372 in words is "seven hundred twenty-eight million, seven hundred forty-seven thousand, three hundred seventy-two".