133206128 has 20 divisors (see below), whose sum is σ = 281549688. Its totient is φ = 60548160.

The previous prime is 133206121. The next prime is 133206167. The reversal of 133206128 is 821602331.

133206128 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 133206097 and 133206106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133206121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378251 + ... + 378602.

Almost surely, 2^133206128 is an apocalyptic number.

It is an amenable number.

133206128 is an abundant number, since it is smaller than the sum of its proper divisors (148343560).

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

133206128 is a wasteful number, since it uses less digits than its factorization.

133206128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756872 (or 756866 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 133206128 is about 11541.4959169078. The cubic root of 133206128 is about 510.7104388245.

Adding to 133206128 its reverse (821602331), we get a palindrome (954808459).

The spelling of 133206128 in words is "one hundred thirty-three million, two hundred six thousand, one hundred twenty-eight".