28329287271 has 16 divisors (see below), whose sum is σ = 40845233664. Its totient is φ = 17397041024.

The previous prime is 28329287213. The next prime is 28329287291. The reversal of 28329287271 is 17278292382.

It is a cyclic number.

It is not a de Polignac number, because 28329287271 - 2¹⁰ = 28329286247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28329287201) 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, 5906925 + ... + 5911718.

It is an arithmetic number, because the mean of its divisors is an integer number (2552827104).

Almost surely, 2^28329287271 is an apocalyptic number.

28329287271 is a deficient number, since it is larger than the sum of its proper divisors (12515946393).

28329287271 is a wasteful number, since it uses less digits than its factorization.

28329287271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11818710.

The product of its digits is 1354752, while the sum is 51.

The spelling of 28329287271 in words is "twenty-eight billion, three hundred twenty-nine million, two hundred eighty-seven thousand, two hundred seventy-one".