728314172 has 12 divisors (see below), whose sum is σ = 1296152760. Its totient is φ = 357984816.

The previous prime is 728314141. The next prime is 728314183. The reversal of 728314172 is 271413827.

728314172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1542803 + ... + 1543274.

It is an arithmetic number, because the mean of its divisors is an integer number (108012730).

Almost surely, 2^728314172 is an apocalyptic number.

It is an amenable number.

728314172 is a deficient number, since it is larger than the sum of its proper divisors (567838588).

728314172 is a wasteful number, since it uses less digits than its factorization.

728314172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3086140 (or 3086138 counting only the distinct ones).

The product of its digits is 18816, while the sum is 35.

The square root of 728314172 is about 26987.2964929798. The cubic root of 728314172 is about 899.7176777023.

Adding to 728314172 its reverse (271413827), we get a palindrome (999727999).

The spelling of 728314172 in words is "seven hundred twenty-eight million, three hundred fourteen thousand, one hundred seventy-two".