728814669209 has 12 divisors (see below), whose sum is σ = 801114804672. Its totient is φ = 662541426360.

The previous prime is 728814669203. The next prime is 728814669269. The reversal of 728814669209 is 902966418827.

It is not a de Polignac number, because 728814669209 - 2²⁴ = 728797891993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728814669203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7765964 + ... + 7859250.

It is an arithmetic number, because the mean of its divisors is an integer number (66759567056).

Almost surely, 2^728814669209 is an apocalyptic number.

It is an amenable number.

728814669209 is a deficient number, since it is larger than the sum of its proper divisors (72300135463).

728814669209 is a wasteful number, since it uses less digits than its factorization.

728814669209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157876 (or 157865 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 62.

The spelling of 728814669209 in words is "seven hundred twenty-eight billion, eight hundred fourteen million, six hundred sixty-nine thousand, two hundred nine".