133224448 has 48 divisors (see below), whose sum is σ = 304471440. Its totient is φ = 57090048.

The previous prime is 133224439. The next prime is 133224451. The reversal of 133224448 is 844422331.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9690 + ... + 18982.

It is an arithmetic number, because the mean of its divisors is an integer number (6343155).

Almost surely, 2^133224448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133224448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152235720).

133224448 is an abundant number, since it is smaller than the sum of its proper divisors (171246992).

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

133224448 is an frugal number, since it uses more digits than its factorization.

133224448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9322 (or 9302 counting only the distinct ones).

The product of its digits is 18432, while the sum is 31.

The square root of 133224448 is about 11542.2895475724. The cubic root of 133224448 is about 510.7338506261.

Adding to 133224448 its reverse (844422331), we get a palindrome (977646779).

The spelling of 133224448 in words is "one hundred thirty-three million, two hundred twenty-four thousand, four hundred forty-eight".