8223816 has 16 divisors (see below), whose sum is σ = 20559600. Its totient is φ = 2741264.

The previous prime is 8223749. The next prime is 8223863. The reversal of 8223816 is 6183228.

It is a super-2 number, since 2×8223816² = 135262299203712, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171306 + ... + 171353.

It is an arithmetic number, because the mean of its divisors is an integer number (1284975).

Almost surely, 2^8223816 is an apocalyptic number.

It is an amenable number.

8223816 is an abundant number, since it is smaller than the sum of its proper divisors (12335784).

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

8223816 is a wasteful number, since it uses less digits than its factorization.

8223816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342668 (or 342664 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 8223816 is about 2867.7196515699. The cubic root of 8223816 is about 201.8480051256.

The spelling of 8223816 in words is "eight million, two hundred twenty-three thousand, eight hundred sixteen".