728717964 has 24 divisors (see below), whose sum is σ = 1831137840. Its totient is φ = 224220864.

The previous prime is 728717959. The next prime is 728717981. The reversal of 728717964 is 469717827.

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 7 ways as a sum of consecutive naturals, for example, 2335479 + ... + 2335790.

It is an arithmetic number, because the mean of its divisors is an integer number (76297410).

Almost surely, 2^728717964 is an apocalyptic number.

It is an amenable number.

728717964 is an abundant number, since it is smaller than the sum of its proper divisors (1102419876).

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

728717964 is a wasteful number, since it uses less digits than its factorization.

728717964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4671289 (or 4671287 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 51.

The square root of 728717964 is about 26994.7766058547. The cubic root of 728717964 is about 899.8839208316.

The spelling of 728717964 in words is "seven hundred twenty-eight million, seven hundred seventeen thousand, nine hundred sixty-four".