133505736 has 64 divisors (see below), whose sum is σ = 410793600. Its totient is φ = 35209728.

The previous prime is 133505689. The next prime is 133505767. The reversal of 133505736 is 637505331.

It is a junction number, because it is equal to n+sod(n) for n = 133505697 and 133505706.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28381 + ... + 32748.

It is an arithmetic number, because the mean of its divisors is an integer number (6418650).

Almost surely, 2^133505736 is an apocalyptic number.

It is an amenable number.

133505736 is an abundant number, since it is smaller than the sum of its proper divisors (277287864).

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

133505736 is a wasteful number, since it uses less digits than its factorization.

133505736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61158 (or 61154 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 33.

The square root of 133505736 is about 11554.4682266212. The cubic root of 133505736 is about 511.0930497433.

The spelling of 133505736 in words is "one hundred thirty-three million, five hundred five thousand, seven hundred thirty-six".