8720243084 has 48 divisors (see below), whose sum is σ = 18046801920. Its totient is φ = 3607908480.

The previous prime is 8720243057. The next prime is 8720243087. The reversal of 8720243084 is 4803420278.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (8720243087) 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, 351704 + ... + 375680.

It is an arithmetic number, because the mean of its divisors is an integer number (375975040).

Almost surely, 2^8720243084 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 8720243084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9023400960).

8720243084 is an abundant number, since it is smaller than the sum of its proper divisors (9326558836).

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

8720243084 is a wasteful number, since it uses less digits than its factorization.

8720243084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24438 (or 24436 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 38.

The square root of 8720243084 is about 93382.2418021756. The cubic root of 8720243084 is about 2058.3040589643.

The spelling of 8720243084 in words is "eight billion, seven hundred twenty million, two hundred forty-three thousand, eighty-four".