133136408 has 32 divisors (see below), whose sum is σ = 252806400. Its totient is φ = 65728032.

The previous prime is 133136407. The next prime is 133136447. The reversal of 133136408 is 804631331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133136407) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 303053 + ... + 303491.

It is an arithmetic number, because the mean of its divisors is an integer number (7900200).

Almost surely, 2^133136408 is an apocalyptic number.

It is an amenable number.

133136408 is a deficient number, since it is larger than the sum of its proper divisors (119669992).

133136408 is a wasteful number, since it uses less digits than its factorization.

133136408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839 (or 835 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 133136408 is about 11538.4751158894. The cubic root of 133136408 is about 510.6213214385.

Adding to 133136408 its reverse (804631331), we get a palindrome (937767739).

The spelling of 133136408 in words is "one hundred thirty-three million, one hundred thirty-six thousand, four hundred eight".