28648732211 has 16 divisors (see below), whose sum is σ = 31479216000. Its totient is φ = 25856478720.

The previous prime is 28648732207. The next prime is 28648732237. The reversal of 28648732211 is 11223784682.

It is a cyclic number.

It is not a de Polignac number, because 28648732211 - 2² = 28648732207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28648722211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1045856 + ... + 1072898.

It is an arithmetic number, because the mean of its divisors is an integer number (1967451000).

Almost surely, 2^28648732211 is an apocalyptic number.

28648732211 is a deficient number, since it is larger than the sum of its proper divisors (2830483789).

28648732211 is a wasteful number, since it uses less digits than its factorization.

28648732211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27746.

The product of its digits is 258048, while the sum is 44.

The spelling of 28648732211 in words is "twenty-eight billion, six hundred forty-eight million, seven hundred thirty-two thousand, two hundred eleven".