4448685312 has 108 divisors (see below), whose sum is σ = 12901954884. Its totient is φ = 1474191360.

The previous prime is 4448685281. The next prime is 4448685317. The reversal of 4448685312 is 2135868444.

It can be written as a sum of positive squares in 2 ways, for example, as 1874543616 + 2574141696 = 43296^2 + 50736^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4448685317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 393012 + ... + 404172.

Almost surely, 2^4448685312 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 4448685312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6450977442).

4448685312 is an abundant number, since it is smaller than the sum of its proper divisors (8453269572).

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

4448685312 is a wasteful number, since it uses less digits than its factorization.

4448685312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11356 (or 11339 counting only the distinct ones).

The product of its digits is 737280, while the sum is 45.

The square root of 4448685312 is about 66698.4655895471. The cubic root of 4448685312 is about 1644.6641605835.

The spelling of 4448685312 in words is "four billion, four hundred forty-eight million, six hundred eighty-five thousand, three hundred twelve".