133130432 has 28 divisors (see below), whose sum is σ = 268665960. Its totient is φ = 65435136.

The previous prime is 133130429. The next prime is 133130441. The reversal of 133130432 is 234031331.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13853 + ... + 21404.

Almost surely, 2^133130432 is an apocalyptic number.

It is an amenable number.

133130432 is an abundant number, since it is smaller than the sum of its proper divisors (135535528).

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

133130432 is an equidigital number, since it uses as much as digits as its factorization.

133130432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35328 (or 35318 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 133130432 is about 11538.2161532882. The cubic root of 133130432 is about 510.6136813578.

Adding to 133130432 its reverse (234031331), we get a palindrome (367161763).

The spelling of 133130432 in words is "one hundred thirty-three million, one hundred thirty thousand, four hundred thirty-two".