8204220 has 48 divisors (see below), whose sum is σ = 25525920. Its totient is φ = 2187648.

The previous prime is 8204191. The next prime is 8204221. The reversal of 8204220 is 224028.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 8204193 and 8204202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8204221) 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, 7057 + ... + 8136.

It is an arithmetic number, because the mean of its divisors is an integer number (531790).

Almost surely, 2^8204220 is an apocalyptic number.

It is an amenable number.

8204220 is an abundant number, since it is smaller than the sum of its proper divisors (17321700).

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

8204220 is a wasteful number, since it uses less digits than its factorization.

8204220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15211 (or 15203 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 8204220 is about 2864.3009618404. The cubic root of 8204220 is about 201.6875540903.

Adding to 8204220 its reverse (224028), we get a palindrome (8428248).

The spelling of 8204220 in words is "eight million, two hundred four thousand, two hundred twenty".