28340211211 has 8 divisors (see below), whose sum is σ = 30521539440. Its totient is φ = 26159070432.

The previous prime is 28340211181. The next prime is 28340211223. The reversal of 28340211211 is 11211204382.

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 28340211211 - 2²⁷ = 28205993483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28340211241) 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, 532605 + ... + 583393.

It is an arithmetic number, because the mean of its divisors is an integer number (3815192430).

Almost surely, 2^28340211211 is an apocalyptic number.

28340211211 is a deficient number, since it is larger than the sum of its proper divisors (2181328229).

28340211211 is a wasteful number, since it uses less digits than its factorization.

28340211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93725.

The product of its (nonzero) digits is 768, while the sum is 25.

Adding to 28340211211 its reverse (11211204382), we get a palindrome (39551415593).

The spelling of 28340211211 in words is "twenty-eight billion, three hundred forty million, two hundred eleven thousand, two hundred eleven".