28441064736 has 960 divisors, whose sum is σ = 111703173120. Its totient is φ = 6897623040.

The previous prime is 28441064723. The next prime is 28441064737. The reversal of 28441064736 is 63746014482.

It is a junction number, because it is equal to n+sod(n) for n = 28441064691 and 28441064700.

It is not an unprimeable number, because it can be changed into a prime (28441064737) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 134791671 + ... + 134791881.

It is an arithmetic number, because the mean of its divisors is an integer number (116357472).

Almost surely, 2^28441064736 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 28441064736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55851586560).

28441064736 is an abundant number, since it is smaller than the sum of its proper divisors (83262108384).

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

28441064736 is a wasteful number, since it uses less digits than its factorization.

28441064736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 28441064736 in words is "twenty-eight billion, four hundred forty-one million, sixty-four thousand, seven hundred thirty-six".