16021226 has 16 divisors (see below), whose sum is σ = 26140968. Its totient is φ = 7320000.

The previous prime is 16021193. The next prime is 16021231. The reversal of 16021226 is 62212061.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15202201 + 819025 = 3899^2 + 905^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16021198 and 16021207.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425 + ... + 5676.

Almost surely, 2^16021226 is an apocalyptic number.

16021226 is a deficient number, since it is larger than the sum of its proper divisors (10119742).

16021226 is a wasteful number, since it uses less digits than its factorization.

16021226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6217.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 16021226 is about 4002.6523706163. The cubic root of 16021226 is about 252.0955902577.

Adding to 16021226 its reverse (62212061), we get a palindrome (78233287).

The spelling of 16021226 in words is "sixteen million, twenty-one thousand, two hundred twenty-six".