728475165 has 24 divisors (see below), whose sum is σ = 1377481248. Its totient is φ = 353199840.

The previous prime is 728475161. The next prime is 728475197. The reversal of 728475165 is 561574827.

It is not a de Polignac number, because 728475165 - 2² = 728475161 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 728475165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728475161) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 735339 + ... + 736328.

It is an arithmetic number, because the mean of its divisors is an integer number (57395052).

Almost surely, 2^728475165 is an apocalyptic number.

It is an amenable number.

728475165 is a deficient number, since it is larger than the sum of its proper divisors (649006083).

728475165 is a wasteful number, since it uses less digits than its factorization.

728475165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1471689 (or 1471686 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The square root of 728475165 is about 26990.2790834033. The cubic root of 728475165 is about 899.7839666667.

The spelling of 728475165 in words is "seven hundred twenty-eight million, four hundred seventy-five thousand, one hundred sixty-five".