28866302871169 has 9 divisors (see below), whose sum is σ = 28975462199593. Its totient is φ = 28757553301552.

The previous prime is 28866302871071. The next prime is 28866302871209. The reversal of 28866302871169 is 96117820366882.

The square root of 28866302871169 is 5372737.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 10541807644225 + 18324495226944 = 3246815^2 + 4280712^2 .

It is not a de Polignac number, because 28866302871169 - 2¹¹ = 28866302869121 is a prime.

It is a super-2 number, since 2×28866302871169² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28866372871169) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1445256267 + ... + 1445276239.

Almost surely, 2^{28866302871169} is an apocalyptic number.

28866302871169 is the 5372737-th square number.

28866302871169 is the 2686369-th centered octagonal number.

It is an amenable number.

28866302871169 is a deficient number, since it is larger than the sum of its proper divisors (109159328424).

28866302871169 is an frugal number, since it uses more digits than its factorization.

28866302871169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40484 (or 20242 counting only the distinct ones).

The product of its (nonzero) digits is 83607552, while the sum is 67.

The spelling of 28866302871169 in words is "twenty-eight trillion, eight hundred sixty-six billion, three hundred two million, eight hundred seventy-one thousand, one hundred sixty-nine".