8448778920 has 32 divisors (see below), whose sum is σ = 25346337120. Its totient is φ = 2253007680.

The previous prime is 8448778879. The next prime is 8448778927. The reversal of 8448778920 is 298778448.

It is not an unprimeable number, because it can be changed into a prime (8448778927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35203126 + ... + 35203365.

It is an arithmetic number, because the mean of its divisors is an integer number (792073035).

Almost surely, 2^8448778920 is an apocalyptic number.

It is an amenable number.

8448778920 is an abundant number, since it is smaller than the sum of its proper divisors (16897558200).

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

8448778920 is a wasteful number, since it uses less digits than its factorization.

8448778920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70406505 (or 70406501 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 57.

The square root of 8448778920 is about 91917.2395146852. The cubic root of 8448778920 is about 2036.7199403665.

The spelling of 8448778920 in words is "eight billion, four hundred forty-eight million, seven hundred seventy-eight thousand, nine hundred twenty".