8344128820 has 48 divisors (see below), whose sum is σ = 18144725760. Its totient is φ = 3219391616.

The previous prime is 8344128797. The next prime is 8344128839. The reversal of 8344128820 is 288214438.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 633219 + ... + 646261.

It is an arithmetic number, because the mean of its divisors is an integer number (378015120).

Almost surely, 2^8344128820 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 8344128820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9072362880).

8344128820 is an abundant number, since it is smaller than the sum of its proper divisors (9800596940).

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

8344128820 is a wasteful number, since it uses less digits than its factorization.

8344128820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14184 (or 14182 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 40.

The square root of 8344128820 is about 91346.2030956952. The cubic root of 8344128820 is about 2028.2757584915.

The spelling of 8344128820 in words is "eight billion, three hundred forty-four million, one hundred twenty-eight thousand, eight hundred twenty".