133240008 has 128 divisors (see below), whose sum is σ = 387763200. Its totient is φ = 37728000.

The previous prime is 133239991. The next prime is 133240021. The reversal of 133240008 is 800042331.

It is a happy number.

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 31 ways as a sum of consecutive naturals, for example, 506485 + ... + 506747.

It is an arithmetic number, because the mean of its divisors is an integer number (3029400).

Almost surely, 2^133240008 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 133240008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193881600).

133240008 is an abundant number, since it is smaller than the sum of its proper divisors (254523192).

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

133240008 is a wasteful number, since it uses less digits than its factorization.

133240008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 133240008 is about 11542.9635709379. The cubic root of 133240008 is about 510.7537336368.

Adding to 133240008 its reverse (800042331), we get a palindrome (933282339).

The spelling of 133240008 in words is "one hundred thirty-three million, two hundred forty thousand, eight".