133640326 has 8 divisors (see below), whose sum is σ = 201580920. Its totient is φ = 66446688.

The previous prime is 133640321. The next prime is 133640329. The reversal of 133640326 is 623046331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 133640294 and 133640303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133640321) 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, 186291 + ... + 187006.

It is an arithmetic number, because the mean of its divisors is an integer number (25197615).

Almost surely, 2^133640326 is an apocalyptic number.

133640326 is a deficient number, since it is larger than the sum of its proper divisors (67940594).

133640326 is a wasteful number, since it uses less digits than its factorization.

133640326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373478.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 133640326 is about 11560.2909132945. The cubic root of 133640326 is about 511.2647400217.

Adding to 133640326 its reverse (623046331), we get a palindrome (756686657).

The spelling of 133640326 in words is "one hundred thirty-three million, six hundred forty thousand, three hundred twenty-six".