728664158208 has 104 divisors (see below), whose sum is σ = 2220419949568. Its totient is φ = 208189734912.

The previous prime is 728664158203. The next prime is 728664158221. The reversal of 728664158208 is 802851466827.

It is not an unprimeable number, because it can be changed into a prime (728664158203) 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, 4149616 + ... + 4321647.

Almost surely, 2^728664158208 is an apocalyptic number.

It is an amenable number.

728664158208 is an abundant number, since it is smaller than the sum of its proper divisors (1491755791360).

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

728664158208 is an equidigital number, since it uses as much as digits as its factorization.

728664158208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8471297 (or 8471275 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 57.

The spelling of 728664158208 in words is "seven hundred twenty-eight billion, six hundred sixty-four million, one hundred fifty-eight thousand, two hundred eight".