133504404 has 24 divisors (see below), whose sum is σ = 339829728. Its totient is φ = 40455840.

The previous prime is 133504381. The next prime is 133504439. The reversal of 133504404 is 404405331.

133504404 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505567 + ... + 505830.

It is an arithmetic number, because the mean of its divisors is an integer number (14159572).

Almost surely, 2^133504404 is an apocalyptic number.

It is an amenable number.

133504404 is an abundant number, since it is smaller than the sum of its proper divisors (206325324).

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

133504404 is a wasteful number, since it uses less digits than its factorization.

133504404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011415 (or 1011413 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 133504404 is about 11554.4105864384. The cubic root of 133504404 is about 511.0913499956.

Adding to 133504404 its reverse (404405331), we get a palindrome (537909735).

The spelling of 133504404 in words is "one hundred thirty-three million, five hundred four thousand, four hundred four".