28504912127 has 8 divisors (see below), whose sum is σ = 30057730560. Its totient is φ = 26957349720.

The previous prime is 28504912123. The next prime is 28504912157. The reversal of 28504912127 is 72121940582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28504912127 - 2² = 28504912123 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 (28504912123) 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 7 ways as a sum of consecutive naturals, for example, 1302863 + ... + 1324560.

It is an arithmetic number, because the mean of its divisors is an integer number (3757216320).

Almost surely, 2^28504912127 is an apocalyptic number.

28504912127 is a deficient number, since it is larger than the sum of its proper divisors (1552818433).

28504912127 is a wasteful number, since it uses less digits than its factorization.

28504912127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628013.

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 28504912127 in words is "twenty-eight billion, five hundred four million, nine hundred twelve thousand, one hundred twenty-seven".