728650730 has 16 divisors (see below), whose sum is σ = 1311880320. Its totient is φ = 291391632.

The previous prime is 728650697. The next prime is 728650751. The reversal of 728650730 is 37056827.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72131 + ... + 81609.

It is an arithmetic number, because the mean of its divisors is an integer number (81992520).

Almost surely, 2^728650730 is an apocalyptic number.

728650730 is a deficient number, since it is larger than the sum of its proper divisors (583229590).

728650730 is a wasteful number, since it uses less digits than its factorization.

728650730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17173.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 728650730 is about 26993.5312621376. The cubic root of 728650730 is about 899.8562445291.

The spelling of 728650730 in words is "seven hundred twenty-eight million, six hundred fifty thousand, seven hundred thirty".