728307606 has 32 divisors (see below), whose sum is σ = 1570087008. Its totient is φ = 223891200.

The previous prime is 728307599. The next prime is 728307661. The reversal of 728307606 is 606703827.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97890 + ... + 105066.

It is an arithmetic number, because the mean of its divisors is an integer number (49065219).

Almost surely, 2^728307606 is an apocalyptic number.

728307606 is an abundant number, since it is smaller than the sum of its proper divisors (841779402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

728307606 is a wasteful number, since it uses less digits than its factorization.

728307606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8496.

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 728307606 is about 26987.1748428768. The cubic root of 728307606 is about 899.7149739406.

The spelling of 728307606 in words is "seven hundred twenty-eight million, three hundred seven thousand, six hundred six".