28268968372044 has 24 divisors (see below), whose sum is σ = 65961095193840. Its totient is φ = 9422965315584.

The previous prime is 28268968372009. The next prime is 28268968372087. The reversal of 28268968372044 is 44027386986282.

It is a self number, because there is not a number n which added to its sum of digits gives 28268968372044.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2225692 + ... + 7841660.

It is an arithmetic number, because the mean of its divisors is an integer number (2748378966410).

Almost surely, 2^{28268968372044} is an apocalyptic number.

It is an amenable number.

28268968372044 is an abundant number, since it is smaller than the sum of its proper divisors (37692126821796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28268968372044 is a wasteful number, since it uses less digits than its factorization.

28268968372044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6035449 (or 6035447 counting only the distinct ones).

The product of its (nonzero) digits is 445906944, while the sum is 69.

The spelling of 28268968372044 in words is "twenty-eight trillion, two hundred sixty-eight billion, nine hundred sixty-eight million, three hundred seventy-two thousand, forty-four".