133443232 has 48 divisors (see below), whose sum is σ = 297833760. Its totient is φ = 58344192.

The previous prime is 133443227. The next prime is 133443253. The reversal of 133443232 is 232344331.

It is a junction number, because it is equal to n+sod(n) for n = 133443197 and 133443206.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 538 + ... + 16345.

It is an arithmetic number, because the mean of its divisors is an integer number (6204870).

Almost surely, 2^133443232 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 133443232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148916880).

133443232 is an abundant number, since it is smaller than the sum of its proper divisors (164390528).

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

133443232 is a wasteful number, since it uses less digits than its factorization.

133443232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16925 (or 16917 counting only the distinct ones).

The product of its digits is 5184, while the sum is 25.

The square root of 133443232 is about 11551.7631554668. The cubic root of 133443232 is about 511.0132770245.

Adding to 133443232 its reverse (232344331), we get a palindrome (365787563).

The spelling of 133443232 in words is "one hundred thirty-three million, four hundred forty-three thousand, two hundred thirty-two".