728328475 has 24 divisors (see below), whose sum is σ = 1067744160. Its totient is φ = 482200320.

The previous prime is 728328451. The next prime is 728328479. The reversal of 728328475 is 574823827.

It is a de Polignac number, because none of the positive numbers 2^k-728328475 is a prime.

It is not an unprimeable number, because it can be changed into a prime (728328479) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66682 + ... + 76831.

It is an arithmetic number, because the mean of its divisors is an integer number (44489340).

Almost surely, 2^728328475 is an apocalyptic number.

728328475 is a deficient number, since it is larger than the sum of its proper divisors (339415685).

728328475 is a wasteful number, since it uses less digits than its factorization.

728328475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143559 (or 143554 counting only the distinct ones).

The product of its digits is 752640, while the sum is 46.

The square root of 728328475 is about 26987.5614867294. The cubic root of 728328475 is about 899.7235673665.

The spelling of 728328475 in words is "seven hundred twenty-eight million, three hundred twenty-eight thousand, four hundred seventy-five".