133505634 has 16 divisors (see below), whose sum is σ = 267307488. Its totient is φ = 44452512.

The previous prime is 133505633. The next prime is 133505651. The reversal of 133505634 is 436505331.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (133505633) 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, 6252 + ... + 17495.

It is an arithmetic number, because the mean of its divisors is an integer number (16706718).

Almost surely, 2^133505634 is an apocalyptic number.

133505634 is an abundant number, since it is smaller than the sum of its proper divisors (133801854).

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

133505634 is a wasteful number, since it uses less digits than its factorization.

133505634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24689.

The product of its (nonzero) digits is 16200, while the sum is 30.

The square root of 133505634 is about 11554.4638127435. The cubic root of 133505634 is about 511.0929195829.

The spelling of 133505634 in words is "one hundred thirty-three million, five hundred five thousand, six hundred thirty-four".