133413904 has 20 divisors (see below), whose sum is σ = 278373676. Its totient is φ = 61575552.

The previous prime is 133413901. The next prime is 133413923. The reversal of 133413904 is 409314331.

It can be written as a sum of positive squares in 2 ways, for example, as 17808400 + 115605504 = 4220^2 + 10752^2 .

It is not an unprimeable number, because it can be changed into a prime (133413901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320499 + ... + 320914.

Almost surely, 2^133413904 is an apocalyptic number.

It is an amenable number.

133413904 is an abundant number, since it is smaller than the sum of its proper divisors (144959772).

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

133413904 is a wasteful number, since it uses less digits than its factorization.

133413904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641434 (or 641428 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 133413904 is about 11550.4936691035. The cubic root of 133413904 is about 510.9758376449.

The spelling of 133413904 in words is "one hundred thirty-three million, four hundred thirteen thousand, nine hundred four".