28441905709 has 8 divisors (see below), whose sum is σ = 34417096128. Its totient is φ = 22944730560.

The previous prime is 28441905707. The next prime is 28441905769. The reversal of 28441905709 is 90750914482.

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 28441905709 - 2¹ = 28441905707 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 (28441905707) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 119503687 + ... + 119503924.

It is an arithmetic number, because the mean of its divisors is an integer number (4302137016).

Almost surely, 2^28441905709 is an apocalyptic number.

It is an amenable number.

28441905709 is a deficient number, since it is larger than the sum of its proper divisors (5975190419).

28441905709 is a wasteful number, since it uses less digits than its factorization.

28441905709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239007635.

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 28441905709 in words is "twenty-eight billion, four hundred forty-one million, nine hundred five thousand, seven hundred nine".