728989989827 has 32 divisors (see below), whose sum is σ = 835823923200. Its totient is φ = 629337060000.

The previous prime is 728989989817. The next prime is 728989989859.

728989989827 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 728989989827 - 2⁸ = 728989989571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728989989817) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80183552 + ... + 80192642.

It is an arithmetic number, because the mean of its divisors is an integer number (26119497600).

Almost surely, 2^728989989827 is an apocalyptic number.

728989989827 is a deficient number, since it is larger than the sum of its proper divisors (106833933373).

728989989827 is a wasteful number, since it uses less digits than its factorization.

728989989827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11375.

The product of its digits is 5267275776, while the sum is 86.

The spelling of 728989989827 in words is "seven hundred twenty-eight billion, nine hundred eighty-nine million, nine hundred eighty-nine thousand, eight hundred twenty-seven".