8789868720 has 120 divisors (see below), whose sum is σ = 29587615200. Its totient is φ = 2338541568.

The previous prime is 8789868713. The next prime is 8789868727. The reversal of 8789868720 is 278689878.

It is an interprime number because it is at equal distance from previous prime (8789868713) and next prime (8789868727).

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×8789868720² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8789868727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 302176 + ... + 329984.

It is an arithmetic number, because the mean of its divisors is an integer number (246563460).

Almost surely, 2^8789868720 is an apocalyptic number.

8789868720 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 8789868720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14793807600).

8789868720 is an abundant number, since it is smaller than the sum of its proper divisors (20797746480).

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

8789868720 is a wasteful number, since it uses less digits than its factorization.

8789868720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28267 (or 28258 counting only the distinct ones).

The product of its (nonzero) digits is 21676032, while the sum is 63.

The square root of 8789868720 is about 93754.2997413985. The cubic root of 8789868720 is about 2063.7676297803.

The spelling of 8789868720 in words is "eight billion, seven hundred eighty-nine million, eight hundred sixty-eight thousand, seven hundred twenty".