8223812 has 6 divisors (see below), whose sum is σ = 14391678. Its totient is φ = 4111904.

The previous prime is 8223749. The next prime is 8223863. The reversal of 8223812 is 2183228.

It can be written as a sum of positive squares in only one way, i.e., 8202496 + 21316 = 2864^2 + 146^2 .

It is a super-2 number, since 2×8223812² = 135262167622688, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 1027973 + ... + 1027980.

It is an arithmetic number, because the mean of its divisors is an integer number (2398613).

Almost surely, 2^8223812 is an apocalyptic number.

It is an amenable number.

8223812 is a deficient number, since it is larger than the sum of its proper divisors (6167866).

8223812 is a wasteful number, since it uses less digits than its factorization.

8223812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055957 (or 2055955 counting only the distinct ones).

The product of its digits is 1536, while the sum is 26.

The square root of 8223812 is about 2867.7189541515. The cubic root of 8223812 is about 201.8479723998.

The spelling of 8223812 in words is "eight million, two hundred twenty-three thousand, eight hundred twelve".