8443282720 has 96 divisors (see below), whose sum is σ = 20671096320. Its totient is φ = 3255168000.

The previous prime is 8443282697. The next prime is 8443282787. The reversal of 8443282720 is 272823448.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3483429 + ... + 3485851.

It is an arithmetic number, because the mean of its divisors is an integer number (215323920).

Almost surely, 2^8443282720 is an apocalyptic number.

8443282720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8443282720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10335548160).

8443282720 is an abundant number, since it is smaller than the sum of its proper divisors (12227813600).

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

8443282720 is a wasteful number, since it uses less digits than its factorization.

8443282720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3218 (or 3210 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 40.

The square root of 8443282720 is about 91887.3371036510. The cubic root of 8443282720 is about 2036.2781941481.

The spelling of 8443282720 in words is "eight billion, four hundred forty-three million, two hundred eighty-two thousand, seven hundred twenty".