728643524 has 36 divisors (see below), whose sum is σ = 1485754704. Its totient is φ = 311761296.

The previous prime is 728643467. The next prime is 728643541. The reversal of 728643524 is 425346827.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 131147 + ... + 136589.

It is an arithmetic number, because the mean of its divisors is an integer number (41270964).

Almost surely, 2^728643524 is an apocalyptic number.

It is an amenable number.

728643524 is an abundant number, since it is smaller than the sum of its proper divisors (757111180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

728643524 is a wasteful number, since it uses less digits than its factorization.

728643524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6144 (or 6135 counting only the distinct ones).

The product of its digits is 322560, while the sum is 41.

The square root of 728643524 is about 26993.3977853845. The cubic root of 728643524 is about 899.8532781397.

The spelling of 728643524 in words is "seven hundred twenty-eight million, six hundred forty-three thousand, five hundred twenty-four".