8220270 has 32 divisors (see below), whose sum is σ = 20367360. Its totient is φ = 2121120.

The previous prime is 8220229. The next prime is 8220271. The reversal of 8220270 is 720228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8220271) 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, 3490 + ... + 5349.

It is an arithmetic number, because the mean of its divisors is an integer number (636480).

Almost surely, 2^8220270 is an apocalyptic number.

8220270 is an abundant number, since it is smaller than the sum of its proper divisors (12147090).

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

8220270 is a wasteful number, since it uses less digits than its factorization.

8220270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8880.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 8220270 is about 2867.1013236368. The cubic root of 8220270 is about 201.8189895637.

Adding to 8220270 its reverse (720228), we get a palindrome (8940498).

The spelling of 8220270 in words is "eight million, two hundred twenty thousand, two hundred seventy".