28442265344 has 72 divisors (see below), whose sum is σ = 60429535488. Its totient is φ = 13314129920.

The previous prime is 28442265343. The next prime is 28442265347. The reversal of 28442265344 is 44356224482.

It is a junction number, because it is equal to n+sod(n) for n = 28442265295 and 28442265304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28442265343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 814124 + ... + 848340.

It is an arithmetic number, because the mean of its divisors is an integer number (839299104).

Almost surely, 2^28442265344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28442265344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30214767744).

28442265344 is an abundant number, since it is smaller than the sum of its proper divisors (31987270144).

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

28442265344 is a wasteful number, since it uses less digits than its factorization.

28442265344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34441 (or 34427 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 44.

The spelling of 28442265344 in words is "twenty-eight billion, four hundred forty-two million, two hundred sixty-five thousand, three hundred forty-four".