133688504 has 16 divisors (see below), whose sum is σ = 253251600. Its totient is φ = 66154752.

The previous prime is 133688497. The next prime is 133688519. The reversal of 133688504 is 405886331.

It is a super-2 number, since 2×133688504² = 35745232203516032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85364 + ... + 86915.

It is an arithmetic number, because the mean of its divisors is an integer number (15828225).

Almost surely, 2^133688504 is an apocalyptic number.

It is an amenable number.

133688504 is a deficient number, since it is larger than the sum of its proper divisors (119563096).

133688504 is a wasteful number, since it uses less digits than its factorization.

133688504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172382 (or 172378 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 133688504 is about 11562.3744966162. The cubic root of 133688504 is about 511.3261704647.

The spelling of 133688504 in words is "one hundred thirty-three million, six hundred eighty-eight thousand, five hundred four".