728761163 has 4 divisors (see below), whose sum is σ = 784819728. Its totient is φ = 672702600.

The previous prime is 728761133. The next prime is 728761171. The reversal of 728761163 is 361167827.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 728761163 - 2²² = 724566859 is a prime.

It is a super-2 number, since 2×728761163² = 1062185665394225138, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 728761163.

It is not an unprimeable number, because it can be changed into a prime (728761123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28029263 + ... + 28029288.

It is an arithmetic number, because the mean of its divisors is an integer number (196204932).

Almost surely, 2^728761163 is an apocalyptic number.

728761163 is a deficient number, since it is larger than the sum of its proper divisors (56058565).

728761163 is a wasteful number, since it uses less digits than its factorization.

728761163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56058564.

The product of its digits is 84672, while the sum is 41.

The square root of 728761163 is about 26995.5767302719. The cubic root of 728761163 is about 899.9017024331.

The spelling of 728761163 in words is "seven hundred twenty-eight million, seven hundred sixty-one thousand, one hundred sixty-three".