728030989 has 8 divisors (see below), whose sum is σ = 837019008. Its totient is φ = 620288880.

The previous prime is 728030969. The next prime is 728031011. The reversal of 728030989 is 989030827.

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

It is a cyclic number.

It is not a de Polignac number, because 728030989 - 2²¹ = 725933837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728030969) 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 7 ways as a sum of consecutive naturals, for example, 310222 + ... + 312559.

It is an arithmetic number, because the mean of its divisors is an integer number (104627376).

Almost surely, 2^728030989 is an apocalyptic number.

It is an amenable number.

728030989 is a deficient number, since it is larger than the sum of its proper divisors (108988019).

728030989 is a wasteful number, since it uses less digits than its factorization.

728030989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622955.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 728030989 is about 26982.0493847298. The cubic root of 728030989 is about 899.6010532245.

The spelling of 728030989 in words is "seven hundred twenty-eight million, thirty thousand, nine hundred eighty-nine".