28044053538 has 16 divisors (see below), whose sum is σ = 56666336160. Its totient is φ = 9251646336.

The previous prime is 28044053509. The next prime is 28044053551. The reversal of 28044053538 is 83535044082.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28044053538.

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, 24092248 + ... + 24093411.

It is an arithmetic number, because the mean of its divisors is an integer number (3541646010).

Almost surely, 2^28044053538 is an apocalyptic number.

28044053538 is an abundant number, since it is smaller than the sum of its proper divisors (28622282622).

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

28044053538 is a wasteful number, since it uses less digits than its factorization.

28044053538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48185761.

The product of its (nonzero) digits is 460800, while the sum is 42.

The spelling of 28044053538 in words is "twenty-eight billion, forty-four million, fifty-three thousand, five hundred thirty-eight".