28772857163 has 8 divisors (see below), whose sum is σ = 29288039136. Its totient is φ = 28259078400.

The previous prime is 28772857151. The next prime is 28772857177. The reversal of 28772857163 is 36175827782.

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 28772857163 - 2²⁰ = 28771808587 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28772857099 and 28772857108.

It is not an unprimeable number, because it can be changed into a prime (28772854163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309383 + ... + 391488.

It is an arithmetic number, because the mean of its divisors is an integer number (3661004892).

Almost surely, 2^28772857163 is an apocalyptic number.

28772857163 is a deficient number, since it is larger than the sum of its proper divisors (515181973).

28772857163 is an equidigital number, since it uses as much as digits as its factorization.

28772857163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701605.

The product of its digits is 7902720, while the sum is 56.

The spelling of 28772857163 in words is "twenty-eight billion, seven hundred seventy-two million, eight hundred fifty-seven thousand, one hundred sixty-three".