816448226 has 12 divisors (see below), whose sum is σ = 1346127846. Its totient is φ = 371112720.

The previous prime is 816448219. The next prime is 816448231. The reversal of 816448226 is 622844618.

It can be written as a sum of positive squares in only one way, i.e., 812307001 + 4141225 = 28501^2 + 2035^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1686635 + ... + 1687118.

Almost surely, 2^816448226 is an apocalyptic number.

816448226 is a deficient number, since it is larger than the sum of its proper divisors (529679620).

816448226 is a wasteful number, since it uses less digits than its factorization.

816448226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3373777 (or 3373766 counting only the distinct ones).

The product of its digits is 147456, while the sum is 41.

The square root of 816448226 is about 28573.5581613491. The cubic root of 816448226 is about 934.6368139617.

The spelling of 816448226 in words is "eight hundred sixteen million, four hundred forty-eight thousand, two hundred twenty-six".