133885424 has 20 divisors (see below), whose sum is σ = 259596480. Its totient is φ = 66892800.

The previous prime is 133885397. The next prime is 133885447. The reversal of 133885424 is 424588331.

It is a happy number.

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, 29072 + ... + 33360.

It is an arithmetic number, because the mean of its divisors is an integer number (12979824).

Almost surely, 2^133885424 is an apocalyptic number.

It is an amenable number.

133885424 is a deficient number, since it is larger than the sum of its proper divisors (125711056).

133885424 is a wasteful number, since it uses less digits than its factorization.

133885424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6248 (or 6242 counting only the distinct ones).

The product of its digits is 92160, while the sum is 38.

The square root of 133885424 is about 11570.8869150122. The cubic root of 133885424 is about 511.5771044112.

The spelling of 133885424 in words is "one hundred thirty-three million, eight hundred eighty-five thousand, four hundred twenty-four".