8223210 has 24 divisors (see below), whose sum is σ = 21380580. Its totient is φ = 2192832.

The previous prime is 8223199. The next prime is 8223217. The reversal of 8223210 is 123228.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7901721 + 321489 = 2811^2 + 567^2 .

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

It is not an unprimeable number, because it can be changed into a prime (8223217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45595 + ... + 45774.

Almost surely, 2^8223210 is an apocalyptic number.

8223210 is an abundant number, since it is smaller than the sum of its proper divisors (13157370).

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

8223210 is a wasteful number, since it uses less digits than its factorization.

8223210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91382 (or 91379 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 8223210 is about 2867.6139907596. The cubic root of 8223210 is about 201.8430470503.

Adding to 8223210 its sum of digits (18), we get a palindrome (8223228).

Adding to 8223210 its reverse (123228), we get a palindrome (8346438).

The spelling of 8223210 in words is "eight million, two hundred twenty-three thousand, two hundred ten".