1223788226 has 16 divisors (see below), whose sum is σ = 1902002040. Its totient is φ = 589854720.

The previous prime is 1223788219. The next prime is 1223788229. The reversal of 1223788226 is 6228873221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1204437025 + 19351201 = 34705^2 + 4399^2 .

It is not an unprimeable number, because it can be changed into a prime (1223788229) by changing a digit.

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, 20720 + ... + 53636.

Almost surely, 2^1223788226 is an apocalyptic number.

1223788226 is a deficient number, since it is larger than the sum of its proper divisors (678213814).

1223788226 is a wasteful number, since it uses less digits than its factorization.

1223788226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33589.

The product of its digits is 129024, while the sum is 41.

The square root of 1223788226 is about 34982.6846596999. The cubic root of 1223788226 is about 1069.6345524637.

The spelling of 1223788226 in words is "one billion, two hundred twenty-three million, seven hundred eighty-eight thousand, two hundred twenty-six".