320005226 has 16 divisors (see below), whose sum is σ = 493257600. Its totient is φ = 155617728.

The previous prime is 320005211. The next prime is 320005247. The reversal of 320005226 is 622500023.

320005226 = 31² + 32² + ... + 986².

It is a happy number.

It is a super-2 number, since 2×320005226² = 204806689334622152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 320005198 and 320005207.

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 7 ways as a sum of consecutive naturals, for example, 12770 + ... + 28338.

It is an arithmetic number, because the mean of its divisors is an integer number (30828600).

Almost surely, 2^320005226 is an apocalyptic number.

320005226 is a deficient number, since it is larger than the sum of its proper divisors (173252374).

320005226 is a wasteful number, since it uses less digits than its factorization.

320005226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15853.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 320005226 is about 17888.6898905426. The cubic root of 320005226 is about 683.9941021230.

Adding to 320005226 its reverse (622500023), we get a palindrome (942505249).

The spelling of 320005226 in words is "three hundred twenty million, five thousand, two hundred twenty-six".