728469441 has 24 divisors (see below), whose sum is σ = 1204906560. Its totient is φ = 415453536.

The previous prime is 728469439. The next prime is 728469449. The reversal of 728469441 is 144964827.

728469441 is a `hidden beast` number, since 72 + 84 + 69 + 441 = 666.

It is not a de Polignac number, because 728469441 - 2¹ = 728469439 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (728469449) 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, 21895 + ... + 44003.

It is an arithmetic number, because the mean of its divisors is an integer number (50204440).

Almost surely, 2^728469441 is an apocalyptic number.

It is an amenable number.

728469441 is a deficient number, since it is larger than the sum of its proper divisors (476437119).

728469441 is a wasteful number, since it uses less digits than its factorization.

728469441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22645 (or 22642 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 728469441 is about 26990.1730450177. The cubic root of 728469441 is about 899.7816099737.

The spelling of 728469441 in words is "seven hundred twenty-eight million, four hundred sixty-nine thousand, four hundred forty-one".