28080708129 has 40 divisors (see below), whose sum is σ = 42309154272. Its totient is φ = 18559756800.

The previous prime is 28080708127. The next prime is 28080708143. The reversal of 28080708129 is 92180708082.

It is a happy number.

It is not a de Polignac number, because 28080708129 - 2¹ = 28080708127 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28080708127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5846529 + ... + 5851329.

Almost surely, 2^28080708129 is an apocalyptic number.

It is an amenable number.

28080708129 is a deficient number, since it is larger than the sum of its proper divisors (14228446143).

28080708129 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (28080708128) it forms an eRAP, since the sums of their prime factors are consecutive (5418 and 5419).

28080708129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5419 (or 5410 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The spelling of 28080708129 in words is "twenty-eight billion, eighty million, seven hundred eight thousand, one hundred twenty-nine".