8745220 has 48 divisors (see below), whose sum is σ = 20256768. Its totient is φ = 3144960.

The previous prime is 8745203. The next prime is 8745223. The reversal of 8745220 is 225478.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (8745223) 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, 27784 + ... + 28096.

It is an arithmetic number, because the mean of its divisors is an integer number (422016).

Almost surely, 2^8745220 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 8745220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10128384).

8745220 is an abundant number, since it is smaller than the sum of its proper divisors (11511548).

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

8745220 is a wasteful number, since it uses less digits than its factorization.

8745220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 8745220 is about 2957.2318137069. The cubic root of 8745220 is about 206.0267348341.

The spelling of 8745220 in words is "eight million, seven hundred forty-five thousand, two hundred twenty".