28320853441 has 4 divisors (see below), whose sum is σ = 28346908672. Its totient is φ = 28294798212.

The previous prime is 28320853423. The next prime is 28320853447. The reversal of 28320853441 is 14435802382.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28320853441 - 2⁵ = 28320853409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28320853394 and 28320853403.

It is not an unprimeable number, because it can be changed into a prime (28320853447) 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 3 ways as a sum of consecutive naturals, for example, 13025985 + ... + 13028158.

It is an arithmetic number, because the mean of its divisors is an integer number (7086727168).

Almost surely, 2^28320853441 is an apocalyptic number.

It is an amenable number.

28320853441 is a deficient number, since it is larger than the sum of its proper divisors (26055231).

28320853441 is a wasteful number, since it uses less digits than its factorization.

28320853441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26055230.

The product of its (nonzero) digits is 184320, while the sum is 40.

The spelling of 28320853441 in words is "twenty-eight billion, three hundred twenty million, eight hundred fifty-three thousand, four hundred forty-one".