8243880840 has 576 divisors, whose sum is σ = 31401043200. Its totient is φ = 1922019840.

The previous prime is 8243880817. The next prime is 8243880851. The reversal of 8243880840 is 480883428.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 175401697 + ... + 175401743.

It is an arithmetic number, because the mean of its divisors is an integer number (54515700).

Almost surely, 2^8243880840 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 8243880840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15700521600).

8243880840 is an abundant number, since it is smaller than the sum of its proper divisors (23157162360).

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

8243880840 is a wasteful number, since it uses less digits than its factorization.

8243880840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 45.

The square root of 8243880840 is about 90795.8195072879. The cubic root of 8243880840 is about 2020.1203111036.

The spelling of 8243880840 in words is "eight billion, two hundred forty-three million, eight hundred eighty thousand, eight hundred forty".