728725606 has 32 divisors (see below), whose sum is σ = 1305312768. Its totient is φ = 298330560.

The previous prime is 728725589. The next prime is 728725607. The reversal of 728725606 is 606527827.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728725607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 414826 + ... + 416578.

It is an arithmetic number, because the mean of its divisors is an integer number (40791024).

Almost surely, 2^728725606 is an apocalyptic number.

728725606 is a deficient number, since it is larger than the sum of its proper divisors (576587162).

728725606 is a wasteful number, since it uses less digits than its factorization.

728725606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3076.

The product of its (nonzero) digits is 282240, while the sum is 43.

The square root of 728725606 is about 26994.9181513855. The cubic root of 728725606 is about 899.8870664879.

The spelling of 728725606 in words is "seven hundred twenty-eight million, seven hundred twenty-five thousand, six hundred six".