728627218847 has 8 divisors (see below), whose sum is σ = 795372037632. Its totient is φ = 661966730200.

The previous prime is 728627218793. The next prime is 728627218859. The reversal of 728627218847 is 748812726827.

It is a happy number.

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 728627218847 - 2⁶ = 728627218783 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 728627218847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728627218547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21064463 + ... + 21099024.

It is an arithmetic number, because the mean of its divisors is an integer number (99421504704).

Almost surely, 2^728627218847 is an apocalyptic number.

728627218847 is a deficient number, since it is larger than the sum of its proper divisors (66744818785).

728627218847 is a wasteful number, since it uses less digits than its factorization.

728627218847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42165069.

The product of its digits is 33718272, while the sum is 62.

The spelling of 728627218847 in words is "seven hundred twenty-eight billion, six hundred twenty-seven million, two hundred eighteen thousand, eight hundred forty-seven".