1728888728873 has 8 divisors (see below), whose sum is σ = 1746458165760. Its totient is φ = 1711405206720.

The previous prime is 1728888728869. The next prime is 1728888728953. The reversal of 1728888728873 is 3788278888271.

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 1728888728873 - 2² = 1728888728869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1728888728794 and 1728888728803.

It is not an unprimeable number, because it can be changed into a prime (1728888728843) 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, 21438233 + ... + 21518726.

It is an arithmetic number, because the mean of its divisors is an integer number (218307270720).

Almost surely, 2^{1728888728873} is an apocalyptic number.

It is an amenable number.

1728888728873 is a deficient number, since it is larger than the sum of its proper divisors (17569436887).

1728888728873 is a wasteful number, since it uses less digits than its factorization.

1728888728873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42957367.

The product of its digits is 1078984704, while the sum is 77.

The spelling of 1728888728873 in words is "one trillion, seven hundred twenty-eight billion, eight hundred eighty-eight million, seven hundred twenty-eight thousand, eight hundred seventy-three".