28268351999 has 8 divisors (see below), whose sum is σ = 28300875120. Its totient is φ = 28235849536.

The previous prime is 28268351989. The next prime is 28268352043. The reversal of 28268351999 is 99915386282.

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 28268351999 - 2⁴ = 28268351983 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 (28268351939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6289397 + ... + 6293889.

It is an arithmetic number, because the mean of its divisors is an integer number (3537609390).

Almost surely, 2^28268351999 is an apocalyptic number.

28268351999 is a deficient number, since it is larger than the sum of its proper divisors (32523121).

28268351999 is a wasteful number, since it uses less digits than its factorization.

28268351999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10329.

The product of its digits is 16796160, while the sum is 62.

The spelling of 28268351999 in words is "twenty-eight billion, two hundred sixty-eight million, three hundred fifty-one thousand, nine hundred ninety-nine".