133040432 has 80 divisors (see below), whose sum is σ = 313670400. Its totient is φ = 53395200.

The previous prime is 133040423. The next prime is 133040471. The reversal of 133040432 is 234040331.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214619 + ... + 215237.

It is an arithmetic number, because the mean of its divisors is an integer number (3920880).

Almost surely, 2^133040432 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 133040432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156835200).

133040432 is an abundant number, since it is smaller than the sum of its proper divisors (180629968).

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

133040432 is a wasteful number, since it uses less digits than its factorization.

133040432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754 (or 748 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 133040432 is about 11534.3154109813. The cubic root of 133040432 is about 510.4985922426.

Adding to 133040432 its reverse (234040331), we get a palindrome (367080763).

The spelling of 133040432 in words is "one hundred thirty-three million, forty thousand, four hundred thirty-two".