4448778256 has 80 divisors (see below), whose sum is σ = 10086576640. Its totient is φ = 1882414080.

The previous prime is 4448778253. The next prime is 4448778281. The reversal of 4448778256 is 6528778444.

It is a junction number, because it is equal to n+sod(n) for n = 4448778197 and 4448778206.

It is not an unprimeable number, because it can be changed into a prime (4448778253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104356 + ... + 140668.

It is an arithmetic number, because the mean of its divisors is an integer number (126082208).

Almost surely, 2^4448778256 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 4448778256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5043288320).

4448778256 is an abundant number, since it is smaller than the sum of its proper divisors (5637798384).

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

4448778256 is a wasteful number, since it uses less digits than its factorization.

4448778256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36384 (or 36378 counting only the distinct ones).

The product of its digits is 12042240, while the sum is 55.

The square root of 4448778256 is about 66699.1623335706. The cubic root of 4448778256 is about 1644.6756141996.

The spelling of 4448778256 in words is "four billion, four hundred forty-eight million, seven hundred seventy-eight thousand, two hundred fifty-six".