28228283811 has 192 divisors, whose sum is σ = 56052412416. Its totient is φ = 13772851200.

The previous prime is 28228283723. The next prime is 28228283819. The reversal of 28228283811 is 11838282282.

28228283811 is a `hidden beast` number, since 28 + 228 + 28 + 381 + 1 = 666.

It is not a de Polignac number, because 28228283811 - 2⁷ = 28228283683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28228283819) 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 191 ways as a sum of consecutive naturals, for example, 22930566 + ... + 22931796.

It is an arithmetic number, because the mean of its divisors is an integer number (291939648).

Almost surely, 2^28228283811 is an apocalyptic number.

28228283811 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

28228283811 is a deficient number, since it is larger than the sum of its proper divisors (27824128605).

28228283811 is a wasteful number, since it uses less digits than its factorization.

28228283811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344 (or 1332 counting only the distinct ones).

The product of its digits is 196608, while the sum is 45.

The spelling of 28228283811 in words is "twenty-eight billion, two hundred twenty-eight million, two hundred eighty-three thousand, eight hundred eleven".