728815075 has 12 divisors (see below), whose sum is σ = 956891880. Its totient is φ = 548754560.

The previous prime is 728815063. The next prime is 728815097. The reversal of 728815075 is 570518827.

It is not a de Polignac number, because 728815075 - 2⁹ = 728814563 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 857005 + ... + 857854.

It is an arithmetic number, because the mean of its divisors is an integer number (79740990).

Almost surely, 2^728815075 is an apocalyptic number.

728815075 is a deficient number, since it is larger than the sum of its proper divisors (228076805).

728815075 is a wasteful number, since it uses less digits than its factorization.

728815075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714886 (or 1714881 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 43.

The square root of 728815075 is about 26996.5752457603. The cubic root of 728815075 is about 899.9238927412.

The spelling of 728815075 in words is "seven hundred twenty-eight million, eight hundred fifteen thousand, seventy-five".