28423987199 has 8 divisors (see below), whose sum is σ = 30097983888. Its totient is φ = 26750212480.

The previous prime is 28423987177. The next prime is 28423987201. The reversal of 28423987199 is 99178932482.

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 28423987199 - 2²⁰ = 28422938623 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 (28423987129) 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, 259184 + ... + 352170.

It is an arithmetic number, because the mean of its divisors is an integer number (3762247986).

Almost surely, 2^28423987199 is an apocalyptic number.

28423987199 is a deficient number, since it is larger than the sum of its proper divisors (1673996689).

28423987199 is a wasteful number, since it uses less digits than its factorization.

28423987199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110985.

The product of its digits is 15676416, while the sum is 62.

The spelling of 28423987199 in words is "twenty-eight billion, four hundred twenty-three million, nine hundred eighty-seven thousand, one hundred ninety-nine".