28009672115 has 4 divisors (see below), whose sum is σ = 33611606544. Its totient is φ = 22407737688.

The previous prime is 28009672109. The next prime is 28009672123. The reversal of 28009672115 is 51127690082.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28009672115 - 2⁴ = 28009672099 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2800967207 + ... + 2800967216.

It is an arithmetic number, because the mean of its divisors is an integer number (8402901636).

Almost surely, 2^28009672115 is an apocalyptic number.

28009672115 is a deficient number, since it is larger than the sum of its proper divisors (5601934429).

28009672115 is an equidigital number, since it uses as much as digits as its factorization.

28009672115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5601934428.

The product of its (nonzero) digits is 60480, while the sum is 41.

It can be divided in two parts, 2800967 and 2115, that added together give a palindrome (2803082).

The spelling of 28009672115 in words is "twenty-eight billion, nine million, six hundred seventy-two thousand, one hundred fifteen".