8220260 has 12 divisors (see below), whose sum is σ = 17262588. Its totient is φ = 3288096.

The previous prime is 8220229. The next prime is 8220271. The reversal of 8220260 is 620228.

It can be written as a sum of positive squares in 2 ways, for example, as 5885476 + 2334784 = 2426^2 + 1528^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 411013 = 8220260 / (8 + 2 + 2 + 0 + 2 + 6 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205487 + ... + 205526.

It is an arithmetic number, because the mean of its divisors is an integer number (1438549).

Almost surely, 2^8220260 is an apocalyptic number.

It is an amenable number.

8220260 is an abundant number, since it is smaller than the sum of its proper divisors (9042328).

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

8220260 is a wasteful number, since it uses less digits than its factorization.

8220260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411022 (or 411020 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 8220260 is about 2867.0995797147. The cubic root of 8220260 is about 201.8189077258.

Adding to 8220260 its reverse (620228), we get a palindrome (8840488).

The spelling of 8220260 in words is "eight million, two hundred twenty thousand, two hundred sixty".