133834638 has 32 divisors (see below), whose sum is σ = 306763776. Its totient is φ = 38131488.

The previous prime is 133834627. The next prime is 133834639. The reversal of 133834638 is 836438331.

It is a junction number, because it is equal to n+sod(n) for n = 133834596 and 133834605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133834639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11395 + ... + 19937.

It is an arithmetic number, because the mean of its divisors is an integer number (9586368).

Almost surely, 2^133834638 is an apocalyptic number.

133834638 is an abundant number, since it is smaller than the sum of its proper divisors (172929138).

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

133834638 is a wasteful number, since it uses less digits than its factorization.

133834638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8928.

The product of its digits is 124416, while the sum is 39.

The square root of 133834638 is about 11568.6921473432. The cubic root of 133834638 is about 511.5124116817.

The spelling of 133834638 in words is "one hundred thirty-three million, eight hundred thirty-four thousand, six hundred thirty-eight".