133504368 has 40 divisors (see below), whose sum is σ = 345561216. Its totient is φ = 44414400.

The previous prime is 133504367. The next prime is 133504381. The reversal of 133504368 is 863405331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133504363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24973 + ... + 29843.

Almost surely, 2^133504368 is an apocalyptic number.

It is an amenable number.

133504368 is an abundant number, since it is smaller than the sum of its proper divisors (212056848).

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

133504368 is a wasteful number, since it uses less digits than its factorization.

133504368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5453 (or 5447 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 133504368 is about 11554.4090285916. The cubic root of 133504368 is about 511.0913040563.

Adding to 133504368 its reverse (863405331), we get a palindrome (996909699).

The spelling of 133504368 in words is "one hundred thirty-three million, five hundred four thousand, three hundred sixty-eight".