28089179999 has 8 divisors (see below), whose sum is σ = 28950295440. Its totient is φ = 27233430336.

The previous prime is 28089179971. The next prime is 28089180047. The reversal of 28089179999 is 99997198082.

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 28089179999 - 2²⁸ = 27820744543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28089179299) 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, 1330814 + ... + 1351755.

It is an arithmetic number, because the mean of its divisors is an integer number (3618786930).

Almost surely, 2^28089179999 is an apocalyptic number.

28089179999 is a deficient number, since it is larger than the sum of its proper divisors (861115441).

28089179999 is a wasteful number, since it uses less digits than its factorization.

28089179999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2682889.

The product of its (nonzero) digits is 52907904, while the sum is 71.

The spelling of 28089179999 in words is "twenty-eight billion, eighty-nine million, one hundred seventy-nine thousand, nine hundred ninety-nine".