133156432 has 10 divisors (see below), whose sum is σ = 257990618. Its totient is φ = 66578208.

The previous prime is 133156421. The next prime is 133156433. The reversal of 133156432 is 234651331.

It can be written as a sum of positive squares in only one way, i.e., 74235456 + 58920976 = 8616^2 + 7676^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 133156432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133156433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4161123 + ... + 4161154.

Almost surely, 2^133156432 is an apocalyptic number.

It is an amenable number.

133156432 is a deficient number, since it is larger than the sum of its proper divisors (124834186).

133156432 is an equidigital number, since it uses as much as digits as its factorization.

133156432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8322285 (or 8322279 counting only the distinct ones).

The product of its digits is 6480, while the sum is 28.

The square root of 133156432 is about 11539.3427889113. The cubic root of 133156432 is about 510.6469196675.

The spelling of 133156432 in words is "one hundred thirty-three million, one hundred fifty-six thousand, four hundred thirty-two".