8782172220 has 24 divisors (see below), whose sum is σ = 24590082384. Its totient is φ = 2341912576.

The previous prime is 8782172177. The next prime is 8782172227. The reversal of 8782172220 is 222712878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8782172227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73184709 + ... + 73184828.

It is an arithmetic number, because the mean of its divisors is an integer number (1024586766).

Almost surely, 2^8782172220 is an apocalyptic number.

It is an amenable number.

8782172220 is an abundant number, since it is smaller than the sum of its proper divisors (15807910164).

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

8782172220 is a wasteful number, since it uses less digits than its factorization.

8782172220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146369549 (or 146369547 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 39.

The square root of 8782172220 is about 93713.2446348967. The cubic root of 8782172220 is about 2063.1651017894.

The spelling of 8782172220 in words is "eight billion, seven hundred eighty-two million, one hundred seventy-two thousand, two hundred twenty".