133303224 has 64 divisors (see below), whose sum is σ = 346752000. Its totient is φ = 42658560.

The previous prime is 133303217. The next prime is 133303237. The reversal of 133303224 is 422303331.

It is a self number, because there is not a number n which added to its sum of digits gives 133303224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102772 + ... + 104060.

It is an arithmetic number, because the mean of its divisors is an integer number (5418000).

Almost surely, 2^133303224 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 133303224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173376000).

133303224 is an abundant number, since it is smaller than the sum of its proper divisors (213448776).

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

133303224 is a wasteful number, since it uses less digits than its factorization.

133303224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468 (or 1464 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 133303224 is about 11545.7015378018. The cubic root of 133303224 is about 510.8344969238.

Adding to 133303224 its reverse (422303331), we get a palindrome (555606555).

The spelling of 133303224 in words is "one hundred thirty-three million, three hundred three thousand, two hundred twenty-four".