728663829 has 8 divisors (see below), whose sum is σ = 997810080. Its totient is φ = 472646736.

The previous prime is 728663821. The next prime is 728663833. The reversal of 728663829 is 928366827.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 728663829 - 2³ = 728663821 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728663821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3282159 + ... + 3282380.

It is an arithmetic number, because the mean of its divisors is an integer number (124726260).

Almost surely, 2^728663829 is an apocalyptic number.

It is an amenable number.

728663829 is a deficient number, since it is larger than the sum of its proper divisors (269146251).

728663829 is a wasteful number, since it uses less digits than its factorization.

728663829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6564579.

The product of its digits is 1741824, while the sum is 51.

The square root of 728663829 is about 26993.7738932518. The cubic root of 728663829 is about 899.8616367542.

The spelling of 728663829 in words is "seven hundred twenty-eight million, six hundred sixty-three thousand, eight hundred twenty-nine".