133224444 has 36 divisors (see below), whose sum is σ = 356572944. Its totient is φ = 41795712.

The previous prime is 133224439. The next prime is 133224451. The reversal of 133224444 is 444422331.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108232 + ... + 109455.

It is an arithmetic number, because the mean of its divisors is an integer number (9904804).

Almost surely, 2^133224444 is an apocalyptic number.

It is an amenable number.

133224444 is an abundant number, since it is smaller than the sum of its proper divisors (223348500).

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

133224444 is a wasteful number, since it uses less digits than its factorization.

133224444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217714 (or 217709 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 133224444 is about 11542.2893742966. The cubic root of 133224444 is about 510.7338455146.

Adding to 133224444 its reverse (444422331), we get a palindrome (577646775).

It can be divided in two parts, 13322 and 4444, that added together give a triangular number (17766 = T₁₈₈).

The spelling of 133224444 in words is "one hundred thirty-three million, two hundred twenty-four thousand, four hundred forty-four".