28220863211 has 8 divisors (see below), whose sum is σ = 28261600224. Its totient is φ = 28180152000.

The previous prime is 28220863193. The next prime is 28220863249. The reversal of 28220863211 is 11236802282.

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 28220863211 - 2¹⁴ = 28220846827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28220860211) 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, 3315461 + ... + 3323961.

It is an arithmetic number, because the mean of its divisors is an integer number (3532700028).

Almost surely, 2^28220863211 is an apocalyptic number.

28220863211 is a deficient number, since it is larger than the sum of its proper divisors (40737013).

28220863211 is an equidigital number, since it uses as much as digits as its factorization.

28220863211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12901.

The product of its (nonzero) digits is 18432, while the sum is 35.

The spelling of 28220863211 in words is "twenty-eight billion, two hundred twenty million, eight hundred sixty-three thousand, two hundred eleven".