8789220 has 144 divisors (see below), whose sum is σ = 30506112. Its totient is φ = 2027520.

The previous prime is 8789203. The next prime is 8789227. The reversal of 8789220 is 229878.

8789220 = 110² + 111² + ... + 302².

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (8789227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 45444 + ... + 45636.

It is an arithmetic number, because the mean of its divisors is an integer number (211848).

Almost surely, 2^8789220 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 8789220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15253056).

8789220 is an abundant number, since it is smaller than the sum of its proper divisors (21716892).

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

8789220 is a wasteful number, since it uses less digits than its factorization.

8789220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 8789220 is about 2964.6618694212. The cubic root of 8789220 is about 206.3716857681.

It can be divided in two parts, 8789 and 220, that added together give a palindrome (9009).

The spelling of 8789220 in words is "eight million, seven hundred eighty-nine thousand, two hundred twenty".