28220882444 has 12 divisors (see below), whose sum is σ = 49393297800. Its totient is φ = 14108511648.

The previous prime is 28220882441. The next prime is 28220882483. The reversal of 28220882444 is 44428802282.

It is a junction number, because it is equal to n+sod(n) for n = 28220882395 and 28220882404.

It is not an unprimeable number, because it can be changed into a prime (28220882441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449234 + ... + 508185.

It is an arithmetic number, because the mean of its divisors is an integer number (4116108150).

Almost surely, 2^28220882444 is an apocalyptic number.

It is an amenable number.

28220882444 is a deficient number, since it is larger than the sum of its proper divisors (21172415356).

28220882444 is a wasteful number, since it uses less digits than its factorization.

28220882444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964792 (or 964790 counting only the distinct ones).

The product of its (nonzero) digits is 524288, while the sum is 44.

The spelling of 28220882444 in words is "twenty-eight billion, two hundred twenty million, eight hundred eighty-two thousand, four hundred forty-four".