728733365 has 4 divisors (see below), whose sum is σ = 874480044. Its totient is φ = 582986688.

The previous prime is 728733359. The next prime is 728733409. The reversal of 728733365 is 563337827.

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

It can be written as a sum of positive squares in 2 ways, for example, as 401521444 + 327211921 = 20038^2 + 18089^2 .

It is a cyclic number.

It is not a de Polignac number, because 728733365 - 2¹⁰ = 728732341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72873332 + ... + 72873341.

It is an arithmetic number, because the mean of its divisors is an integer number (218620011).

Almost surely, 2^728733365 is an apocalyptic number.

It is an amenable number.

728733365 is a deficient number, since it is larger than the sum of its proper divisors (145746679).

728733365 is a wasteful number, since it uses less digits than its factorization.

728733365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145746678.

The product of its digits is 635040, while the sum is 44.

The square root of 728733365 is about 26995.0618632371. The cubic root of 728733365 is about 899.8902602822.

The spelling of 728733365 in words is "seven hundred twenty-eight million, seven hundred thirty-three thousand, three hundred sixty-five".