28022784146 has 24 divisors (see below), whose sum is σ = 48904200396. Its totient is φ = 12007971360.

The previous prime is 28022784143. The next prime is 28022784151. The reversal of 28022784146 is 64148722082.

It can be written as a sum of positive squares in 2 ways, for example, as 27790557025 + 232227121 = 166705^2 + 15239^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28022784097 and 28022784106.

It is not an unprimeable number, because it can be changed into a prime (28022784143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 797876 + ... + 832256.

Almost surely, 2^28022784146 is an apocalyptic number.

28022784146 is a deficient number, since it is larger than the sum of its proper divisors (20881416250).

28022784146 is a wasteful number, since it uses less digits than its factorization.

28022784146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42714 (or 42707 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 44.

The spelling of 28022784146 in words is "twenty-eight billion, twenty-two million, seven hundred eighty-four thousand, one hundred forty-six".