728854664 has 16 divisors (see below), whose sum is σ = 1366917120. Its totient is φ = 364343440.

The previous prime is 728854627. The next prime is 728854667. The reversal of 728854664 is 466458827.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (728854667) 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, 41729 + ... + 56559.

It is an arithmetic number, because the mean of its divisors is an integer number (85432320).

Almost surely, 2^728854664 is an apocalyptic number.

It is an amenable number.

728854664 is a deficient number, since it is larger than the sum of its proper divisors (638062456).

728854664 is a wasteful number, since it uses less digits than its factorization.

728854664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20980 (or 20976 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 50.

The square root of 728854664 is about 26997.3084584371. The cubic root of 728854664 is about 899.9401869715.

The spelling of 728854664 in words is "seven hundred twenty-eight million, eight hundred fifty-four thousand, six hundred sixty-four".