133222432 has 48 divisors (see below), whose sum is σ = 301371840. Its totient is φ = 56786688.

The previous prime is 133222429. The next prime is 133222447. The reversal of 133222432 is 234222331.

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 7 ways as a sum of consecutive naturals, for example, 42619 + ... + 45637.

It is an arithmetic number, because the mean of its divisors is an integer number (6278580).

Almost surely, 2^133222432 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 133222432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150685920).

133222432 is an abundant number, since it is smaller than the sum of its proper divisors (168149408).

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

133222432 is a wasteful number, since it uses less digits than its factorization.

133222432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3233 (or 3225 counting only the distinct ones).

The product of its digits is 1728, while the sum is 22.

The square root of 133222432 is about 11542.2022162151. The cubic root of 133222432 is about 510.7312744107.

Adding to 133222432 its reverse (234222331), we get a palindrome (367444763).

The spelling of 133222432 in words is "one hundred thirty-three million, two hundred twenty-two thousand, four hundred thirty-two".