28384250109 has 16 divisors (see below), whose sum is σ = 37996879872. Its totient is φ = 18847280448.

The previous prime is 28384250093. The next prime is 28384250129. The reversal of 28384250109 is 90105248382.

It is not a de Polignac number, because 28384250109 - 2⁴ = 28384250093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28384250129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2972707 + ... + 2982239.

It is an arithmetic number, because the mean of its divisors is an integer number (2374804992).

Almost surely, 2^28384250109 is an apocalyptic number.

It is an amenable number.

28384250109 is a deficient number, since it is larger than the sum of its proper divisors (9612629763).

28384250109 is a wasteful number, since it uses less digits than its factorization.

28384250109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13396.

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 28384250109 in words is "twenty-eight billion, three hundred eighty-four million, two hundred fifty thousand, one hundred nine".