133244226 has 48 divisors (see below), whose sum is σ = 309666240. Its totient is φ = 41277600.

The previous prime is 133244203. The next prime is 133244257. The reversal of 133244226 is 622442331.

It is a self number, because there is not a number n which added to its sum of digits gives 133244226.

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 23 ways as a sum of consecutive naturals, for example, 14451 + ... + 21801.

It is an arithmetic number, because the mean of its divisors is an integer number (6451380).

Almost surely, 2^133244226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133244226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154833120).

133244226 is an abundant number, since it is smaller than the sum of its proper divisors (176422014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133244226 is a wasteful number, since it uses less digits than its factorization.

133244226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7431 (or 7428 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 133244226 is about 11543.1462782034. The cubic root of 133244226 is about 510.7591232505.

Adding to 133244226 its reverse (622442331), we get a palindrome (755686557).

The spelling of 133244226 in words is "one hundred thirty-three million, two hundred forty-four thousand, two hundred twenty-six".