28909084513 has 8 divisors (see below), whose sum is σ = 29610070688. Its totient is φ = 28209402144.

The previous prime is 28909084489. The next prime is 28909084517. The reversal of 28909084513 is 31548090982.

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

It is a de Polignac number, because none of the positive numbers 2^k-28909084513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28909084517) 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, 280995 + ... + 369832.

It is an arithmetic number, because the mean of its divisors is an integer number (3701258836).

Almost surely, 2^28909084513 is an apocalyptic number.

It is an amenable number.

28909084513 is a deficient number, since it is larger than the sum of its proper divisors (700986175).

28909084513 is a wasteful number, since it uses less digits than its factorization.

28909084513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651903.

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 28909084513 in words is "twenty-eight billion, nine hundred nine million, eighty-four thousand, five hundred thirteen".