28724868727673 has 16 divisors (see below), whose sum is σ = 29179819209600. Its totient is φ = 28273522147584.

The previous prime is 28724868727651. The next prime is 28724868727697. The reversal of 28724868727673 is 37672786842782.

It is a cyclic number.

It is not a de Polignac number, because 28724868727673 - 2⁸ = 28724868727417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28724868727594 and 28724868727603.

It is not an unprimeable number, because it can be changed into a prime (28724868727603) 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 15 ways as a sum of consecutive naturals, for example, 79340540 + ... + 79701762.

It is an arithmetic number, because the mean of its divisors is an integer number (1823738700600).

Almost surely, 2^{28724868727673} is an apocalyptic number.

It is an amenable number.

28724868727673 is a deficient number, since it is larger than the sum of its proper divisors (454950481927).

28724868727673 is a wasteful number, since it uses less digits than its factorization.

28724868727673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366208.

The product of its digits is 4248502272, while the sum is 77.

The spelling of 28724868727673 in words is "twenty-eight trillion, seven hundred twenty-four billion, eight hundred sixty-eight million, seven hundred twenty-seven thousand, six hundred seventy-three".